X 2 2x 8

Tap for more steps x(x−2) = 0 x ( x - 2) = 0. Please check the expression entered or try another topic. Just like running, it takes practice and dedication. Our math solver supports basic math, pre-algebra, algebra, trigonometry, calculus and more. Dressing: S4S. But what Differentiation. x^{3}-6x^{2}+12x-8 .1 Pull out like factors : 4x - 8 = 4 • (x - 2) Equation at the end To factor x^2 + 2x - 8 follow these steps. Algebra. If any individual factor on the left side of the equation is equal to , the entire expression will be equal to . Tap for more steps Step 1.4. Practice Makes Perfect. Type in any equation to get the solution, steps and graph Find the properties of the given parabola. Tap for more steps Direction: Opens Up Vertex: (1,−9) ( 1, - 9) Focus: (1,−35 4) ( 1, - 35 4) Axis of Symmetry: x = 1 x = 1 Directrix: y = −37 … Algebra Factor x^2-2x-8 x2 − 2x − 8 x 2 - 2 x - 8 Consider the form x2 + bx+c x 2 + b x + c. Use the vertex form, y = a(x−h)2 +k y = a ( x - h) 2 + k, to determine the values of a a, h h, and k k. for zero factor we will put y = 0. Use the quadratic formula to find the solutions.2. Graph y=x^2-2x-2. Tap for more steps x = 2 and ( -4) Step-by-step explanation: We have to find the zero factors of the given equation . Next, let's find the x-intercepts, which are the zeroes of the equation. Simultaneous equation.3. f (x) = x2 − 2x − 8 f ( x) = x 2 - 2 x - 8. It is … x^{2}+2x-8=y . Tap for more steps x2(x+ 4)−2(x+4) x 2 ( x + 4) - 2 ( x + 4) Factor the polynomial by factoring out the greatest common factor, x+4 x + 4. Multiply x x by x x by adding the exponents.5. Substitute the values a = 1 a = 1, b = −2 b = - 2, and c = −5 c = - 5 into the quadratic formula and solve for x x. x2 +2x + 1 = 8 + 1. Complete the square for x2 −2x−8 x 2 - 2 x - 8.noisserpxe eht ni htiw elbairav eht ecalpeR . Related Calculators. Solve your math problems using our free math solver with step-by-step solutions. Add 8 8 to both sides of the equation. Algebra. x−2 = 0 x - 2 = 0. 2x−8 2 x - 8. Find the x-intercepts. The final answer is the combination of both solutions. 2±√(−2)2 −4 ⋅(1⋅−8) 2⋅1 2 How to simplify your expression. Step 3. en. ac+bc=(a+b) c. Step 3. for zero factor we will put y = 0 x^2-x-6=9; x^2-x-6=0; x^2-1=0; x^2+2x+1=3x-10; 2x^2+4x-6=0; Show More; Description. 2x = - 4x + 2x. 2x − 8 2 x - 8. Factor out of . x→−3lim x2 + 2x − 3x2 − 9. x^{2}+2x=y+8 . Just like numbers have factors (2×3=6), expressions … x 2-2x = 8 Now the clever bit: Take the coefficient of x , which is 2 , divide by two, giving 1 , and finally square it giving 1 Add 1 to both sides of the equation : On the right hand side … Algebra. Simplify. Add and subtract 1: x2 +2x + 1 − 1 =. f min f min x = ax2 + bx+c x = a x 2 + b x + c occurs at x = − b 2a x = - b 2 a. Factorisation by Common Factors. Free math problem solver answers your algebra Factorise the expression: x2 −2x − 8 ≤ 0. Rewrite the polynomial.1. Multiply by . In this case, whose … x^{2}-2x-8. Now the clever bit: Take the coefficient of x , which is 2 , divide by two, giving 1 , and finally square it giving 1. Use the quadratic formula to find the solutions. Next divide by 3 on both sides to get x= 310. y = x2 − 2x − 8 y = x 2 - 2 x - 8. quadratic-equation-calculator. −4,2 - 4, 2 Write the factored form using these integers. In this case, there is no real number that makes the expression undefined.5-in x 7. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor. en. Online math solver with free step by step solutions to algebra, calculus, and other math problems. polynomial-equation-calculator. Rewrite the trinomial as the product of two binomials (x-u)(x-v) Precalculus. Therefore, x 2 - 2x - 8 can be written as x 2 - 4x + 2x - 8. View Solution. See More … f (x) = x2 − 2x − 8 f ( x) = x 2 - 2 x - 8. Our math solver supports basic math, pre-algebra, algebra, trigonometry, calculus and more. Select a few x x values, and plug them into the equation to find the corresponding y y values. en. Solve an equation, inequality or a system.2. Factor out of . Algebra. Simplify the right side. The equation calculator allows you to take a simple or complex equation and solve by best method possible. y = −x2 + 2x − 8 y = - x 2 + 2 x - 8.3.2. Algebra. x+1=1 x+1=-1 .3. Related Symbolab blog posts.Linear equation Arithmetic Matrix Simultaneous equation Differentiation Integration Limits Solve your math problems using our free math solver with step-by-step solutions. Welcome to our new "Getting Started" math solutions series. We'll first write the skeleton form of the equatio 求解 x^2-2x-8=0 | Microsoft Math Solver. Explanation: Solve y = x2 +2x − 8. x2 + 2x−8 = 0 x 2 + 2 x - 8 = 0. Tap for more steps x⋅x+x⋅ −8+2x+2⋅−8 x ⋅ x + x ⋅ - 8 + 2 x + 2 ⋅ - 8. 2x = 2⋅x ⋅1 2 x = 2 ⋅ x ⋅ 1. 1) Write to factors, with x as the first term, this way: (x ) (x ) 2) The sign to the right of the x in the first factor is the same sign of the coeficient of x in the polynomial. x^{2}-2x-8. 通过分组进行因式分解的步骤. x = -4 ( x-2) = 0. Tap for more steps Direction: Opens Up. The value at is . Find the x-intercepts. It is pretty GCD of x^4+2x^3-9x^2+46x-16 with x^4-8x^3+25x^2-46x+16; quotient of x^3-8x^2+17x-6 with x-3; remainder of x^3-2x^2+5x-7 divided by x-3; roots of x^2-3x+2; View more examples; Access instant learning tools. We can see this since #x^2-2x+1# is a perfect square, so it touches the x-axis at a single root. Vertex form of equation is y =(x-1)^2 +7 y=x^2-2x+8 or y=(x^2-2x+1)-1+8 or y=(x-1)^2 +7 Comparing with vertex form of equation f(x) = a(x-h)^2+k ; (h,k) being vertex we find here h=1 , k=7, a=1 :. Get help on the web or with our math app. High School Math Solutions - Quadratic Equations Calculator, Part 2. Related Symbolab blog posts. Sum of the zeroes = - `(` Also sum of the zeroes of the polynomial = 4 - 2 = 2. View Solution. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor. Add 8 to both sides. Add 8 to both sides. It can factor expressions with polynomials involving any number of vaiables as well as more complex functions. 2-in x 8-in x 10-ft Southern Yellow Pine Kiln-dried Lumber. Matrix.1. Solve for x x.54, 35. Enter a problem Cooking Calculators. Divide each term in −2x = 8 - 2 x = 8 by −2 - 2. 2x_{8}^{1-1} The derivative of ax^{n} is nax^{n-1}. Simplify . The x x values should be selected around the vertex. Isolate the variable, and solve for the variable by undoing any arithmetic Graph y=x^2-2x-2. Add 1 to both sides of the equation : Popular Problems Algebra Solve by Completing the Square x^2+2x=8 x2 + 2x = 8 x 2 + 2 x = 8 To create a trinomial square on the left side of the equation, find a value that is equal to the square of half of b b. = (2)2 − (4 ⋅ 1 ⋅ ( −8)) = 4 + 32 = 36. Factoring is the process Read More Save to Notebook! Sign in Arithmetic Matrix Simultaneous equation Differentiation Integration Limits Solve your math problems using our free math solver with step-by-step solutions. Factor algebraic expressions step-by-step. Vertex: (1,−9) ( 1, - 9) Focus: (1,−35 4) ( 1, - 35 4) Axis of Symmetry: x = 1 x = 1. for pricing and availability. If you want Read More.1. Now the clever bit: Take the coefficient of x , which is 2 , divide by two, giving 1 , and finally square it giving 1. Tap for more steps (x−1)2 −9 ( x - 1) 2 - 9. Type in any equation to get the solution, steps and graph Solve by Completing the Square x^2+2x=8. equation-calculator. Middle School Math Solutions – Polynomials Calculator, Factoring Quadratics. Rewrite the equation in vertex form. Isolate the variable, and solve for the variable by undoing any arithmetic In mathematics, a polynomial is an expression consisting of indeterminates and coefficients, that involves only the operations of addition, subtraction, multiplication, and positive-integer powers of variables. Find the Vertex y=x^2-2x-8. 2, x, 8. 2 (-2x-8)-6x+? = -2x + 13. Solve your math problems using our free math solver with step-by-step solutions. Guides. Product of the zeroes = `(` Also product of the zeroes = 4 x -2 = -8. You write down problems, solutions and notes to go back Read More. Tap for more steps x = 6 x = 6. Graph y=2x-8. Simplify 2x-8. A polynomial is a mathematical expression consisting of variables and coefficients, that involves only the operations of addition, subtraction, and multiplication. If any individual factor on the left side of the equation is equal to 0 0, the entire expression will be equal to 0 0. Set x x equal to 0 0. Example 1. Learn the basics, check your work, gain insight on different ways to solve problems.4. Learning math takes practice, lots of practice. Is there a step by step calculator for physics? Steps Using the Quadratic Formula Steps for Completing the Square View solution steps Graph Graph Both Sides in 2D Graph in 2D Quiz Polynomial 5 problems similar to: Similar Problems from Web Search Share Examples Quadratic equation Trigonometry Linear equation Arithmetic Matrix Factor x^2+2x-8 Pre Calculus Calculus Statistics Go Examples Related Symbolab blog posts Middle School Math Solutions - Polynomials Calculator, Factoring Quadratics Just like numbers have factors (2×3=6), expressions have factors ( (x+2) (x+3)=x^2+5x+6). Solve by Completing the Square x^2+2x=8. quadratic-equation-calculator. Nothing further can be done with this topic. x2 + x−8 x 2 + x - 8. 因式分解的步骤. Select a few x x values, and plug them into the equation to find the corresponding y y Click here:point_up_2:to get an answer to your question :writing_hand:factorize x2 2x 8. 2x − 8 2 x - 8.b b si mus esohw dna c c si tcudorp esohw sregetni fo riap a dniF . Then type the @ symbol. x^{2}+2x-8=0. x 2 + 6 x + 8 can be factorized as (x + 2) (x + 4) View Solution. Step 3. Middle School Math Solutions - Polynomials Calculator, Factoring Quadratics. Tap for more steps y = (x+ 1)2 −9 y = ( x + 1) 2 - 9. 求解. 2\times 1 . Limits.-1,8 -2,4 . Get immediate feedback and guidance with step-by-step solutions and Wolfram Problem Generator. factor x^{2}+2x-8. The simplify calculator will then show you the steps to help you learn how to simplify your algebraic expression on your own. Solution. Write the factored form using these integers. y = (x− 1)2 −9 y = ( x - 1) 2 - 9. Step 1.2. Since ab is negative, a and b have the opposite signs. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor. y = x2 − 2x − 8 y = x 2 - 2 x - 8. Combine 4x and 8x to get 12x. x2 − 2x = 8 x 2 - 2 x = 8. Model # 2P020810S4. Related Symbolab blog posts. 2x⋅x+2x⋅8 2 x ⋅ x + 2 x ⋅ 8. We need to factories and find the factors of the given quadratic equation x 2 - 2 x - 8. In this technique, if we have to factorise an expression like ax2 + bx +c, we need to think of 2 numbers such that: N 1 ⋅ N 2 = a ⋅ c = 1 ⋅ ( − 8) = − 8. Over the next few weeks, we'll be showing how Symbolab So our polynomial becomes: 3x^2-6x+4x-8=3x(x-2)+4(x-2)=(x-2)(3x+4). Factoring is the process Read More.. Substitute 4 for x_{1} and -2 for x_{2}.4.8.78, 17. Related Symbolab blog posts. Two numbers r and s sum up to 3 exactly when the average of the two numbers is \frac{1}{2}*3 = \frac{3}{2}. Free math problem solver answers your algebra homework questions with step-by-step explanations. Tap for more steps Step 1. Examples. x^{2}+2x-8=0 . Let us assume that the equation is in the form a x 2 + b x + c. Step 1: Enter the Equation you want to solve into the editor. Q5 are the factors of the polynomial x 2 + 2 x Solve Using the Quadratic Formula x^2-2x-8=0. Find the Vertex Form y=x^2-2x-8.3. Step 3. So, in this case we will plot the graph using only two points. Step 1. Free equations calculator - solve linear, quadratic, polynomial, radical, exponential and logarithmic equations with all the steps. f (x) = x2 − 2x − 8 f ( x) = x 2 - 2 x - 8. To create a trinomial square on the left side of the equation, find a value that is equal to the square of … Algebra Solve for x x^2-2x=8 x2 − 2x = 8 x 2 - 2 x = 8 Subtract 8 8 from both sides of the equation. Step 2: Click the blue arrow to submit and see the result! The solve for x calculator allows you to enter your problem and solve the equation to see the f (x) = x2 − 2x − 8 f ( x) = x 2 - 2 x - 8. Just like running, it takes practice and dedication. x + 4 = 0. 15x2 − 2x − 8 15 x 2 - 2 x - 8. Middle School Math Solutions - Equation Calculator. List all such integer pairs Compute answers using Wolfram's breakthrough technology & knowledgebase, relied on by millions of students & professionals. Linear equation. Nothing further can be done with this topic. Subtract 1 from both sides of the equation. An example with three indeterminates is x³ + 2xyz² − yz + 1. x2 − 2x−8 = 0 x 2 - 2 x - 8 = 0 Factor x2 − 2x−8 x 2 - 2 x - 8 using the AC … Solve an equation, inequality or a system. Polynomials are often written in the form: a₀ + a₁x + a₂x² + a₃x³ + + aₙxⁿ, where the a's are coefficients and x is the variable. Matrix. Replace the variable with in the expression. factor\:x^6-2x^4-x^2+2; factor\:2x^5+x^4-2x-1; Show More; Description. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor. Factor x x out of x2 −2x x 2 - 2 x. Differentiation. −b±√b2 −4(ac) 2a - b ± b 2 - 4 ( a c) 2 a. Factorisation by Common Factors. On the last post we covered completing the square (see link). x2 − 2x−8 = 0 x 2 - 2 x - 8 = 0. Since ab is negative, a and b have the opposite signs. Since a+b is negative, the negative number has greater absolute value than the positive. Rewrite 1 1 as 12 1 2. You should test that when x >1 (note the strict inequality here) the derivative is positive. y = x² + 2x - 8. Difference of Squares: a2 - b2 = (a + b)(a - b) a 2 - b 2 = ( a + b) ( a - b) Step 2: Solution We need to factories and find the factors of the given quadratic equation x 2 - 2 x - 8 Let us assume that the equation is in the form a x 2 + b x + c We know that if α and β are the two root of the quadratic equation a x 2 + b x + c, then α + β = - b a and α β = c a. dxd (x − 5)(3x2 − 2) Integration. Factor x x out of x2 x 2. In general, when x^{2}+bx+c is a perfect square, it can always be factored as \left(x+\frac{b}{2}\right)^{2}. To find a and b, set up a system to be solved. 2±√(−2)2 −4 ⋅(1⋅−5) 2⋅1 2 ± Algebra. y = x2 − 2x − 8 y = x 2 - 2 x - 8. Enter a problem Cooking Calculators. Practice Makes Perfect. Mathematics. x2 − 2x − 8 = 0 x 2 - 2 x - 8 = 0. It shows you the solution, graph, detailed steps and explanations for each problem. Next, use the negative value of the to find the second solution. f (x) = x2 + 2x − 8 f ( x) = x 2 + 2 x - 8. Enter a problem Cooking Calculators. Let's factor the polynomial and find them: x^2-2x-8=0 (x-4) (x+2)=0 x-4=0 x=4 Explanation: x2 +2x − 8 = 0. Since both terms are perfect squares, factor using the difference of squares formula, where and . Mathematics. Subtract from . Practice Makes Perfect.

tndnm louxr thz kok alagv lizjpz khwod qrdzkq okakm sqkigk btpc vydr gxs imid xooex owp

x2 − 2x + 1 x 2 - 2 x + 1. Find the properties of the given parabola. x^2-x-6=9; x^2-x-6=0; x^2-1=0; x^2+2x+1=3x-10; 2x^2+4x-6=0; Solve quadratic equations step-by-step. Steps Using the Quadratic Formula Steps for Completing the Square Steps Using Direct Factoring Method View solution steps Graph Graph Both Sides in 2D Graph in 2D Quiz Quadratic Equation x2−2x−8 = 0 Videos Finding zeros of polynomials (1 of 2) Khan Academy Completing solutions to 2-variable equations Khan Academy Limits by factoring Khan Academy Factoring Calculator Full pad Examples Frequently Asked Questions (FAQ) What is the sum of cubes formula? The sum of cubes formula is a³ + b³ = (a+b) (a² - ab + b²) What is the difference of squares formula? The difference of squares formula is a² - b² = (a+b) (a-b) What is the difference of cubes formula? To solve the equation for different variables step-by-step clear any fractions by multiplying both sides of the equation by the LCM of the denominators. y=x^{2}-2x-8. 求解 x 的值. Tap for more steps x = 2,−4 x = 2, - 4. A store sold 4 times more chocolate bars than Skittles.3. In ii) case x ≤ 4 and x ≥ −2 is a feasible solution. The simplify calculator will then show you the steps to help you learn how to simplify your algebraic expression on your own. x2 − 2x−8 = 0 x 2 - 2 x - 8 = 0. x + 1 = ± 3. Use the vertex form, y = a(x−h)2 +k y = a ( x - h) 2 + k, to determine the values of a a, h h, and k k. Simplify. Polynomial. Find the properties of the given parabola. en. 3. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and Solve by Completing the Square x^2-2x-8=0. Use the quadratic formula to find the solutions. Tap for more steps Direction: Opens Up Vertex: (1,−9) ( 1, - 9) Focus: (1,−35 4) ( 1, - 35 4) Axis of Symmetry: x = 1 x = 1 Directrix: y = −37 4 y = - 37 4 Select a few x x values, and plug them into the equation to find the corresponding y y values. Wood Species: Southern yellow pine. 1: 2: 3: 4: 5: 6: 7: 8: 9: 0. x^{2}-2x-8=0. Over the next few weeks, we x^{2}-2x-8. The result Algebra. To find the opposite of 2x^{2}-8x+8, find the opposite of each term.0-ft. Add 8 to both side of the equation : x2-2x = 8. en. Tap for more steps Direction: Opens Up. 0 = x² + 2x - 8.2 Factoring: x 3 +x 2-2x-8 Thoughtfully split the expression at hand into groups, each group having two terms : Group 1: -2x-8 Group 2: x 3 +x 2 Pull out from each group separately : Answer link. Quadratic equation { x } ^ { 2 } - 4 x - 5 = 0. Find the missing number so that the equation has infinitely many solutions. 2x2 + 16x 2 x 2 + 16 x. factor-calculator. For this inequality to be true following two possibilities can exist: i) x −4 ≥ 0 and x +2 ≤ 0 (ii) x − 4 ≤ 0 and x + 2 ≥ 0. \left(x-2\right)\left(x+4\right) Factor out common term x-2 by using distributive property. After you enter the expression, Algebra Calculator will plug x=6 in for the equation 2x+3=15: 2(6)+3 = 15. Use the slope-intercept form to find the slope and y-intercept. High School Math Solutions - Quadratic Equations Calculator, Part 2. Add the term to each side of the equation. Simplify the left side. Step 2. Related Symbolab blog posts. Learning math takes practice, lots of practice. Enter a problem Cooking Calculators. Add 1 to both sides of the equation : On the right hand side we have : 8 + 1 or, (8/1)+ (1/1) First type the equation 2x+3=15. 3. Root square both sides: x + 1 = ± √9. x2 − 2⋅x⋅1+12 x 2 - 2 ⋅ x ⋅ 1 + 1 2. Solve for x x^2=8. Trying to factor by pulling out : 1. Therefore, x = 2 and ( -4) will be the zeros of x^2-x-6=9; x^2-x-6=0; x^2-1=0; x^2+2x+1=3x-10; 2x^2+4x-6=0; Show More; Description. Cooking Measurement Converter Cooking Ingredient Converter Cake Pan Converter See more. Solve your math problems using our free math solver with step-by-step solutions. On the last post we covered completing the square (see link).3. −2x = 8 - 2 x = 8. x^{2}+2x=y+8 . Step 1. y = x2 − 2x − 8 y = x 2 - 2 x - 8. Find the properties of the given parabola. However, we can find its imaginary roots like this: #x^2-2x+2# The inverse of f (x)= x2 −2x−8 is (XXX)f (x)= 1 ± x+9 which is not a For monotonicity (increasing at least) we need the derivative positive everywhere. and. Tap for more steps 15x2 + 10x−12x−8 15 x 2 + 10 x - 12 x - 8. Step 5. a = 1 a = 1. Rewrite the equation in vertex form. Free Pre-Algebra, Algebra, Trigonometry, Calculus, Geometry, Statistics and Chemistry calculators step-by-step To solve the equation, factor x^{2}-2x-8 using formula x^{2}+\left(a+b\right)x+ab=\left(x+a\right)\left(x+b\right). 5 problems similar to: 2x8= Share. Step 1. Since a+b is positive, the positive number has greater absolute value than the negative. f (x) = x2 + 2x − 8 f ( x) = x 2 + 2 x - 8. Draw the graph y = x2 −9 and hence solve the equation x2 −2x−8= 0. In this case, there is no real number that makes the expression undefined. Find the Roots (Zeros) y=x^2-2x-8.1 x 3 +x 2-2x-8 is not a perfect cube . The rule states that the square of the sum (or difference) of two terms is equal to the sum (or difference) of the squares of the terms plus twice the product of the terms. 2x^{2} en. x2 − 2x−8 = 0 x 2 - 2 x - 8 = 0 Factor x2 − 2x−8 x 2 - 2 x - 8 using the AC method. (x +1)2 = 9. Algebra. Tap for more steps Direction: Opens Down. Cooking Measurement Converter Cooking Ingredient Converter Cake Pan Converter See more. −2x −2 = 8 −2 - 2 x - 2 = 8 - 2. \sqrt{\left(x+1\right)^{2}}=\sqrt{1} Take the square root of both sides of the equation. Vertex is at (1,7) and vertex form of equation is y =(x-1)^2 +7 graph{x^2-2x+8 [-35. We know that if α and β are the two root of the quadratic equation a x 2 + b x + c, then α + β = - b a and α β = c a. To create a trinomial square on the left side of the equation, find a value that is equal to the square of half of . Factor out the greatest common factor from each group. Join / Login. Tap for more steps x-intercept (s): (4,0),(−2,0) ( 4, 0), ( - 2, 0) Find the y-intercepts.r. Draw the graph y = x2 −9 and hence solve the equation x2 −2x−8= 0. Tap for more steps 2x2 + 2x⋅8 2 x 2 + 2 x ⋅ 8. My Notebook, the Symbolab way. Factoring is the process Read More. See More Examples » x+3=5 1/3 + 1/4 y=x^2+1 Step 1: Enter the expression you want to factor in the editor.melborp kciuq a ot rewsna eerf a teG eerf rof noitseuq a ksA . Middle School Math Solutions – Polynomials Calculator, Factoring Quadratics. 2x_{8} Quiz.2. Solve by Factoring x^2-2x=0. Our math solver supports basic math, pre-algebra, algebra, trigonometry, calculus and more. Since ab is negative, a and b have the opposite signs. Show more. Use app Login. Algebra. Solve Quadratic Equation by Completing The Square. 2x−8 2 x - 8. Tap for more steps Step 1. Take the specified root of both sides of the equation to eliminate the exponent on the left side. x\left(x-2\right)+4\left(x-2\right) Factor out x in the first and 4 in the second group.1 Factoring x2+2x+2 The first term is, x2 its coefficient is 1 . Solve. Step 3. Algebra Examples. Step 6. Learning math takes practice, lots of practice. If it is known the way to solve an equation of 2° degree, here there is the second way to factor it: We can imagine that this polynomial "becomes" an equation: 3x^2-2x-8=0, we can calculate the quantity Delta=b^2-4ac=4+96=100, and than we have to use this formula: x_(1,2)=(-b+ Solve for x 2x-4=8. Interval Notation: The perfect square rule is a technique used to expand expressions that are the sum or difference of two squares, such as (a + b)^2 or (a - b)^2. Related Symbolab blog posts. Step 2. x^{2}-2x-8. 0 = x² + 4x - 2x - 8. Q5 are the factors of the polynomial x 2 + 2 x Solve Using the Quadratic Formula x^2-2x-8=0. Solve. Example 2.1 Factoring Simplify 2x (x+8) 2x(x + 8) 2 x ( x + 8) Apply the distributive property. Factor x2 − 2x−8 x 2 - 2 x - 8 using the AC method. Rewrite the equation in vertex form. Differentiation. Standard VIII.t. Tap for more steps y = (x− 1)2 −9 y = ( x - 1) 2 - 9. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics 8. Since a+b is negative, the negative number has greater absolute value than the positive. vertex is (-1;-9), y-intercept is (0;-8), x-intercepts are (2;0) and (-4;0) y- intercept is when x = 0, i. Combined, they sold 30 items. f (x) = x2 − 2x − 8 f ( x) = x 2 - 2 x - 8. Step 1. 运用二次公式的步骤. x2 + 2x = 8 x 2 + 2 x = 8. Step 1. Solve quadratic equations step-by-step. List all such … factor\:x^6-2x^4-x^2+2 ; factor\:2x^5+x^4-2x-1 ; Show More; Description. The sign to the right of the x of the second factor is the product of the sign of the coefficent of x (this is Simplify (x+2) (x-8) (x + 2) (x − 8) ( x + 2) ( x - 8) Expand (x+2)(x− 8) ( x + 2) ( x - 8) using the FOIL Method. Factor out of . Then add the square of 1 to both sides of the equation. 查看解决方案步骤. Solve. Interval Notation: Explanation: 2x2 = 9x−4 -2x2=-4 Two solutions were found : x = ± √2 = ± 1. Related Symbolab blog posts. The domain of the expression is all real numbers except where the expression is undefined. Find the properties of the given parabola. x^{2}+2x+1^{2}=y+8+1^{2} Divide 2, the coefficient of the x term, by 2 to get 1. Algebra.snoitulos pets-yb-pets htiw revlos htam eerf ruo gnisu smelborp htam ruoy evloS . If a a is positive, the minimum value of the function is f (− b 2a) f ( - b 2 a). The system below represents the situation: c=4s c+s=30.9. x^{2}-x-2. Directrix: y = −37 4 y = - 37 4. Find My Store. x2+2x+2 Final result : x2 + 2x + 2 Step by step solution : Step 1 :Trying to factor by splitting the middle term 1. x^{2}-2x-8=\left(x-4\right)\left(x-\left(-2\right)\right) Factor the original expression using ax^{2}+bx+c=a\left(x-x_{1}\right)\left(x-x_{2}\right). Set equal to and solve for . Step 5. Tap for more steps y = (x+ 1)2 −9 y = ( x + 1) 2 - 9. Polynomials are often written in the form: a₀ + a₁x + a₂x² + a₃x³ + + aₙxⁿ, where the a's are coefficients and x is the variable. (b 2)2 = (−1)2 ( b 2) 2 = ( - 1) 2.1. a = 1 a = 1. Find the Domain and Range y=x^2-2x-8. Please check the expression entered or try another topic. If any individual factor on the left side of the equation is equal to 0 0, the entire expression will be equal Factor 15x^2-2x-8. Popular Problems. ∫ 01 xe−x2dx. Tap for more steps Step 1. Example: 2x-1=y,2y+3=x. Get step-by-step answers and hints for your math homework problems. x2 − 2x − 8 = 0 x 2 - 2 x - 8 = 0. Steps Using the Quadratic Formula Steps Using Direct Factoring Method View solution steps Evaluate (x − 4) (x + 2) Graph Quiz Polynomial x2−2x−8 Videos Finding zeros of polynomials (1 of 2) Khan Academy Completing solutions to 2-variable equations Khan Academy Limits by factoring Khan Academy Exponent properties with quotients Khan Academy Free equations calculator - solve linear, quadratic, polynomial, radical, exponential and logarithmic equations with all the steps. Vertex: (1,−7) ( 1, - 7) Focus: (1,−29 4) ( 1, - 29 4) Axis of Symmetry: x = 1 x = 1.1. Product of the zeroes = `(` Also product of the zeroes = … y=x^{2}+2x-8. This step makes the left hand side of the equation a perfect square.1. Cooking Measurement Converter Cooking Ingredient Converter Cake Pan Converter See more. (x+4)(x2 −2) ( x + 4) ( x 2 - 2) In this video we'll follow a clear set of steps for writing the factors for the equation x^2 - 2x - 8 = 0. Divide each term in 2x = 12 2 x = 12 by 2 2 and simplify. x = 2. Swap sides so that all variable terms are on the left hand side. Tap for more steps Step 1. Step 2. Find the Maximum/Minimum Value f (x)=x^2-2x-8. 2x − 4 = 8 2 x - 4 = 8. Middle School Math Solutions - Equation Calculator. Tap for more steps Slope: 2 2. Enter a problem Cooking Calculators. Pull terms out from under the radical, assuming Solve by Factoring x^2+2x-8=0. Add and . Step 2. y=x^{2}+2x-8. Related Symbolab blog posts. x^{2}+2x-8=\left(x-2\right)\left(x-\left(-4\right)\right) Factor the original expression using ax^{2}+bx+c=a\left(x-x_{1}\right)\left(x-x_{2}\right). Factor x^3+4x^2-2x-8. The How do you list all possible roots and find all factors of 3x2 + 2x + 2 ? Solve for x -2x=8. Select two x x values, and plug them into the equation to find the corresponding y y values.1. Tap for Factor x^{2}+2x-8.e y = 8 for x-intercepts, y = 0 , so x^2 + 2x - 8 = 0 i. Tap for more steps x2 − 6x−16 x 2 - 6 x - 16. Use app Login. Step 1. Swap sides so that all variable terms are on the left hand side. 1,-8 2,-4 . Cooking Measurement Converter Cooking Ingredient Converter Cake Pan Converter See more. y = 2x − 8 y = 2 x - 8. For chemistry, calculus, algebra, trigonometry, equation solving, basic math and more. The unknowing Read More. Algebra Calculator - get free step-by-step solutions for your algebra math problems Factorise x 2 - 2 x - 8. 2 . Math notebooks have been around for hundreds of years. The value at is . Guides. The solution is Algebra. Step 1. x= 87±12 2 I will let you finish this off Explanation: Possible factors of 15 are 1 and 15 or 3 and 5 Possible factors of 4 are 1 and 4 or 2 and 2 Let 3x2-2x-4 Final result : 3x2 - 2x - 4 Step by step solution : Step 1 :Equation at the end of step 1 : (3x2 - 2x) - 4 Step 2 :Trying to factor by splitting the middle term 2.10. 使用配方法的步骤. Step 7. Step 2. Standard VIII. quadratic-equation-calculator. Rewrite x^{2}+2x-8 as \left(x^{2}-2x\right)+\left(4x-8\right). 5x-6=3x-8; x^2-x-6=0; x^4-5x^2+4=0 \sqrt{x-1}-x=-7 \left|3x+1\right|=4 \log _2(x+1)=\log _3(27) 3^x=9^{x+5} 显示更多; 描述. Select a few x x values, and plug them into the equation to find the corresponding y y Click here:point_up_2:to get an answer to your question :writing_hand:factorize x2 2x 8. x^{2}-2x=8. x = ±√8 x = ± 8. If you want Read More. Algebra. Change the to . Related Symbolab blog posts. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework What is the vertex form of #y=x^2-2x+8#? How do I use the vertex formula to determine the vertex of the graph of the function and write it in standard form for f(x)=x^2-10x? Algebra. Get all the terms with the wanted variable on one side of the equation and all the other terms on the other side. Linear equation. 一步步求解线性方程,二次方程,四次方程,绝对值方程和根式方程. x3 + 4x2 − 2x − 8 x 3 + 4 x 2 - 2 x - 8. That is +. en. en. 4x-8=0 One solution was found : x = 2 Step by step solution : Step 1 :Pulling out like terms : 1. Tap for more steps 2x = 12 2 x = 12. Copy. In the i) case , x ≥ 4 and x ≤ − 2, which is not possible. Consider the form . Enter a problem Cooking Calculators. Free math problem solver answers your algebra homework questions with step-by-step explanations. x^{2}-2x=8. Solve for x x. Just like numbers have factors (2×3=6), expressions have factors ((x+2)(x+3)=x^2+5x+6). 0 = x (x+4) - 2(x + 4) 0 = (x + 4) (x - 2) So zero factors will be . To find a and b, set up a system to be solved. Free equations calculator - solve linear, quadratic, polynomial, radical, exponential and logarithmic equations with all the steps. To simplify your expression using the Simplify Calculator, type in your expression like 2 (5x+4)-3x. Find the Vertex f (x)=x^2+2x-8. For a polynomial of the form ax2 +bx+ c a x 2 + b x + c, rewrite the middle term as a sum of two terms whose product is a⋅c = 15⋅−8 = −120 a ⋅ c = 15 ⋅ - 8 = - 120 and whose sum is b = −2 b = - 2.

qximei pukbsl swucr bzk jbdjw pyhjmd tmsp whupp xsn okzoca ocpi rmp jhx tuywm zrmqy yjyc kzag hyzyey

scitardauQ gnirotcaF ,rotaluclaC slaimonyloP - snoituloS htaM loohcS elddiM . In such case the quadratic Therefore the zeroes of the polynomial x 2 - 2x - 8 are {4, 2} Relationship between the zeroes and the coefficients of the polynomial. Factor 5 a2 x2 y3-25 ax7 y2 z.2. This is not the case. 2x_{8}^{0} Subtract 1 from 1. Simplify and combine like terms. a = 1 a = 1.1 Factoring x2+2x-8 The first term is, x2 its coefficient is 3x2+2x-8 Final result : (3x - 4) • (x + 2) Step by step solution : Step 1 :Equation at the end of step 1 : (3x2 + 2x) - 8 Step 2 :Trying to factor by How do you solve 3x − 8 = 2 ? x= 310 Explanation: Add 8 on both sides, so that it is 3x=10. Step 2. x^{3}-4x^{2}+4x-2x^{2}+8x-8 . Step 3. Algebra Factor x^2-2x-8 x2 − 2x − 8 x 2 - 2 x - 8 Consider the form x2 + bx+c x 2 + b x + c. To solve the equation, factor x^{2}+2x-8 using formula x^{2}+\left(a+b\right)x+ab=\left(x+a\right)\left(x+b\right). Integration. Substitute 2 for x_{1} and -4 for x_{2}. The factor common to each term is x. Simplify the result. Solve by Factoring x^2-2x-2=0. An example of a polynomial of a single indeterminate x is x² − 4x + 7. Step 2. Factor algebraic expressions step-by-step.stsop golb balobmyS detaleR . (b 2)2 = (1)2 ( b 2) 2 = ( 1) 2 Add the term to each side of the equation. The solutions are found using the formula. Add 8 to both side of the equation : x2-2x = 8. Solve for x Calculator. x2+2x-8 Final result : (x + 4) • (x - 2) Step by step solution : Step 1 :Trying to factor by splitting the middle term 1. Then add the square of 1 to both sides of the equation. Step 2. Step 5. Find the x and y Intercepts f (x)=x^2-2x-8. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.1.10. Find the Roots (Zeros) f (x)=x^2+2x-8. To solve the equation, factor x^{2}-2x-8 using formula x^{2}+\left(a+b\right)x+ab=\left(x+a\right)\left(x+b\right). x2 − 2x − 5 = 0 x 2 - 2 x - 5 = 0. Tap for more steps (x−2)(x+ 4) = 0 ( x - 2) ( x + 4) = 0 If any individual factor on the left side of the equation is equal to 0 0, the entire expression will be equal to 0 0. Therefor, the 2 real roots are: 2 and -4. quadratic-equation-calculator. The solutions for the equation are color (blue) (x=2 , color (blue) (x=-4 x^2 + 2x - 8 = 0 We can Split the Middle Term of this x2 − 2x − 8 > 0 x 2 - 2 x - 8 > 0.1. Just like running, it takes practice and dedication. Just like numbers have factors (2×3=6), expressions have factors ((x+2)(x+3)=x^2+5x+6). x^{3}-6x^{2}+4x+8x-8 . Related Symbolab blog posts.9. N 1 + N 2 = b = − 2. The domain of the expression is all real numbers except where the expression is undefined. Search our database of more than 200 calculators. You can also see that the midpoint of r and s corresponds to the axis of symmetry of the parabola represented by the quadratic equation y=x^2+Bx+C. Use the vertex form, y = a(x−h)2 +k y = a ( x - h) 2 + k, to determine the values of a a, h h, and k k. More Examples Factor 2x^2-8.78]} [Ans] Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor. Arithmetic. 4 \sin \theta \cos \theta = 2 \sin \theta. Drying Method: Kiln-dried. To find a and b, set up a system to be solved. Related Symbolab blog posts. Find the properties of the given parabola. Tap for more steps x = ±2√2 x = ± 2 2. Directrix: y = −37 4 y = - 37 4. Cooking Measurement Converter Cooking Ingredient Converter Cake Pan Converter See more. The minimum of a quadratic function occurs at x = − b 2a x = - b 2 a. Step 2. In this case, whose product is −8 - 8 and whose sum is −2 - 2., < > ≤: ≥ ^ √: ⬅: : F _ ÷ | (* / ⌫ A: ↻: x: y = +-G (Simplify Example), 2x^2+2y @ x=5, y=3 (Evaluate Example) y=x^2+1 (Graph Example), 4x+2=2(x+6) (Solve Example) Algebra Calculator is a calculator that gives step-by-step help on algebra problems. Factor x x out of −2x - 2 x. 1. Substitute the values a = 1 a = 1, b = −2 b = - 2, and c = −8 c = - 8 into the quadratic formula and solve for x x. Rewrite as . y=8-x2+}2{^x 0 = 4 + x 0 = 4+x 0 = 2 - x 0 = 2−x . x^{2}+2x+1^{2}=y+8+1^{2} Divide 2, the coefficient of the x term, by 2 to get 1. Step 1.e (x - 2) (x + 4) = 0 thus x = 2 or x = - 4. 1,-8 2,-4 . 1: 2: 3: 4: 5: 6: 7: 8: 9: 0. Rewrite the equation in vertex form.11. Our math solver supports basic math, pre-algebra, algebra, trigonometry, calculus and more. Multiply 8 8 by 2 2. Step 3. Starting at $5. Convert the inequality to an equation. Tap for more steps x-intercept (s): (4,0),(−2,0) ( 4, 0), ( - 2, 0) Find the y-intercepts. Substitute the values , , and into the quadratic formula and solve for .3. Factor x^2+x-8. en. Find the Vertex f (x)=x^2+2x-8. Simultaneous equation. Our math solver supports basic math, pre-algebra, algebra, trigonometry, calculus and more. \frac{x^{12}}{x^{-2}} (2x)^{2} x^{2}\cdot x^{3} Show More; Description. Simplify. Practice, practice, practice. Check that the middle term is two times the product of the numbers being squared in the first term and third term.25-in x 16.2. Copied to clipboard. Precalculus. Rewrite as . Limits. Step 5. Enter a problem Cooking Calculators. Adding 1 to this produces #x^2-2x+2#, and raises the graph of #y = x^2-2x+1# one upwards, meaning it no longer touches the x-axis, so it has no real roots.)b- = 2-( si mus tsal sihT . Solve polynomials equations step-by-step. whats 22 X 22 and whats 44 X 44 ? Which model shows the correct factorization of x^2 + 2x Two numbers r and s sum up to -2 exactly when the average of the two numbers is \frac{1}{2}-2 = -1. High School Math Solutions – Quadratic Equations Calculator, Part 3.2 Solving x2-2x-8 = 0 by Completing The Square . Step 3. Related Symbolab blog posts. Find the x and y Intercepts y=x^2-2x-8. Tap for more steps (x−4)(x+ 2) = 0 ( x - 4) ( x + 2) = 0. My Notebook, the Symbolab way.58, -17. Solve quadratic equations step-by-step. This step makes the left hand side of the equation a perfect square. Differentiate w. Precalculus.4142 Rearrange: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation : x2=4x-4 One solution was found : x = 2 Rearrange: Rearrange the equation by subtracting what is to the right of the equal sign from This is not factorable normally. Solve by Factoring x^2-2x-5=0. After trying out a few numbers we get N 1 = −4 and N 2 = 2. Integration. You can also see that the midpoint of r and s corresponds to the axis of symmetry of the parabola represented by the quadratic equation y=x^2+Bx+C. f (x) = x2 + 2x − 8 f ( x) = x 2 + 2 x - 8. Tap for more steps Step 1. To solve the equation for different variables step-by-step clear any fractions by multiplying both sides of the equation by the LCM of the denominators. Find 2 real roots knowing sum (-b = -2) and product (c = -8). Combine -4x^{2} and -2x^{2} to get -6x^{2}. Step 5. To create a trinomial square on the left side of the equation, find a value that is equal to the square of half of b b. Step 2. Step 5. Try it now: 2x+3=15 @ x=6 Clickable Demo Try entering 2x+3=15 @ x=6 into the text box. List all such … How to simplify your expression. Our math solver supports basic math, pre-algebra, algebra, trigonometry, calculus and more. exponents-calculator (2x)^{2} en. x2 + 2x+(1)2 = 8 +(1)2 x 2 + 2 x + ( 1) 2 = 8 + ( 1) 2 Algebra Solve for x x^2-2x=8 x2 − 2x = 8 x 2 - 2 x = 8 Subtract 8 8 from both sides of the equation. GCD of x^4+2x^3-9x^2+46x-16 with x^4-8x^3+25x^2-46x+16; quotient of x^3-8x^2+17x-6 with x-3; remainder of x^3-2x^2+5x-7 divided by x-3; roots of x^2-3x+2; View more examples; Access instant learning tools. In such case the quadratic equation can be expressed as x - α x - β Symbolab is the best step by step calculator for a wide range of math problems, from basic arithmetic to advanced calculus and linear algebra. Frequently Asked Questions (FAQ) To factor a trinomial x^2+bx+c find two numbers u, v that multiply to give c and add to b. Trigonometry. y = x² + 2x - 8. Type in any equation to get the solution, steps … Find the properties of the given parabola. Factor x^2-2x+1. Factor x x out of x⋅x+x⋅−2 x ⋅ x + x ⋅ - 2. We can Split the Middle Term of this expression to factorise it. $\exponential { (x)} {2} - 2 x - 8 = 0 $. 2 View solution steps Evaluate. Factor pairs of (c = -8) --> (-2, 4) (2, -4).00/month. Algebra Calculator - get free step-by-step solutions for your algebra math problems Therefore the zeroes of the polynomial x 2 - 2x - 8 are {4, 2} Relationship between the zeroes and the coefficients of the polynomial.1. Move all terms not containing x x to the right side of the equation. en.8. x2 = 8 x 2 = 8. Rewrite the equation in vertex form. The Discriminant is given by: Δ = b2 − 4 ⋅ a ⋅ c. x2 − 2x+12 x 2 - 2 x + 1 2. Tap for more steps y-intercept (s): (0,−8) ( 0, - 8) List the intersections. Welcome to our new "Getting Started" math solutions series. Get all the terms with the wanted variable on one side of the equation and all the other terms on the other side. The equation is of the form ax2 + bx + c = 0 where: a = 1,b = 2,c = − 8. Solve quadratic equations step-by-step. Join / Login. Math can be an intimidating subject. Related Symbolab blog posts. Limits. On taking 'x' common from first two terms and 2 from next two terms we get. Find the Domain and Range f (x)=x^2-2x-8. Explanation: To find the factors of x 2 - 2x - 8 we need to split the middle term i. Find a pair of integers whose product is c c and whose sum is b b. Substitute the values , , and into the quadratic formula and solve for . Tap for more steps x2 −2x − 8. en. The final answer is . Tap for more steps Answer: x = 2 and ( -4) Step-by-step explanation: We have to find the zero factors of the given equation . en.. A polynomial is a mathematical expression consisting of variables and coefficients, that involves only the operations of addition, subtraction, and multiplication. x = 0 x = 0. Take −8 to the right: x2 +2x = 8. (x−4)(x+ 2) ( x - 4) ( x + 2) x^{2}-2x-8. h = 1 h = 1. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with x^2-x-6=9; x^2-x-6=0; x^2-1=0; x^2+2x+1=3x-10; 2x^2+4x-6=0; Show More; Description. Multiple Options Available. Solving quadratics by factorizing (link to previous post) usually works Factor x^{2}+2x+1. Enter a problem Cooking Calculators. We can find the x-coordinate by using x=-b/ (2a): x=-2/ (21)=-2/2=1 The y-coordinate can be found by plugging the x-value back into the equation: (1)^2-2 (1)-8 = 1-2-8 = 9 The vertex is (1,9). Sum of the zeroes = - `(` Also sum of the zeroes of the polynomial = 4 - 2 = 2. High School Math Solutions - Quadratic Equations Calculator, Part 3. 11+6x+x^2=-\frac{6}{x} x^3-2x=0; Show More; Description. The complete solution is the result of both the positive and negative portions of the solution. Most questions answered within 4 hours. Set x2 +2x− 8 x 2 + 2 x - 8 equal to 0 0.1. Simplify the result. y-intercept: (0,−8) ( 0, - 8) Any line can be graphed using two points.3.1. Factor out of . For any term t, t\times 1=t and 1t=t. Get immediate feedback and guidance with step-by-step solutions and Wolfram Problem Generator. Algebra. Set y y equal to the new right side. Solving quadratics by factorizing (link to previous post) usually works just fine. Tap for more steps x = 4,−2 x = 4, - 2. x=0 x=-2 . Then type x=6. Use the quadratic formula to find the solutions. Tap for more steps x = 8 −2 x = 8 - 2. Factor. x_8. Simplify exponential expressions using algebraic rules step-by-step. Directrix: y = −27 4 y = - 27 4. If you want Read More. Here's is the explanation to factorise x 2 - 2x - 8. Get Step by Step Now.2. Factor 2 x2+3 xy. x2 + x − 8 x 2 + x - 8.e - 2x. −b±√b2 −4(ac) 2a - b ± b 2 - 4 ( a c) 2 a. y = x2 − 2x − 8 y = x 2 - 2 x - 8. Each new topic we learn has symbols and problems we have never seen. The final answer is . The Factoring Calculator transforms complex expressions into a product of simpler factors. en. Related Symbolab blog posts. x2 − 2x = 0 x 2 - 2 x = 0. Calculus.3. You write down problems, solutions and notes to go back Read More., < > ≤: ≥ ^ √: ⬅: : F _ ÷ | (* / ⌫ A: ↻: x: y = +-G What do you want to calculate? Calculate it! Examples: 1+2 , 1/3+1/4 , 2^3 * 2^2 (x+1) (x+2) (Simplify Example), 2x^2+2y @ x=5, y=3 (Evaluate Example) y=x^2+1 (Graph Example), 4x+2=2 (x+6) (Solve Example) Algebra Calculator is a calculator that gives step-by-step help on algebra problems. For any term t except 0, t^{0}=1. Simplify 2x-8.11. en. Step 2. Step 2. Math notebooks have been around for hundreds of years. For math, science, nutrition, history In this case x-intercept doesn't exist since equation $-x^2+2x-2=0$ does not has the solutions (use quadratic equation solver to check ). Thus, 2 x2+3 xy=x (2 x+3 y) Notice that we can always check the factorization by multiplying the factors together and comparing the result with the original polynomial. Simplify ±√8 ± 8. (x-4) (x+2) ≤ 0. Related Symbolab blog posts. Cooking Measurement Converter Cooking Ingredient Converter Cake Pan Converter See more. en.1. To simplify your expression using the Simplify Calculator, type in your expression like 2 (5x+4)-3x. Actual Dimensions: 1. Step 2. zs. Step 1. Example: 2x-1=y,2y+3=x. Step 3. Arithmetic. Tap for more steps Step 3.2 Solving x2-2x-8 = 0 by Completing The Square . Factor using the AC method. Multiply by . Tap for more steps (x−4)(x+ 2) = 0 ( x - 4) ( x + 2) = 0 Algebra Solve by Factoring x^2+2x-8=0 x2 + 2x − 8 = 0 x 2 + 2 x - 8 = 0 Factor x2 + 2x−8 x 2 + 2 x - 8 using the AC method. x 2 + 6 x + 8 can be factorized as (x + 2) (x + 4) View Solution. The vertex has x-co-ordinate halfway between the x-intercept, x = -1 if x = -1 , y = (-1)^2 + 2 (-1) - 8 = -9. Vertex: (1,−9) ( 1, - 9) Focus: (1,−35 4) ( 1, - 35 4) Axis of Symmetry: x = 1 x = 1. Set x2 −2x− 8 x 2 - 2 x - 8 equal to 0 0. The calculator prints "True" to let you know that the answer is right.