8x^2-8x-14=0

Simple and best practice solution for 8x^2-8x-14=0 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 8x^2-8x-14=0 equation:


Simplifying
8x2 + -8x + -14 = 0

Reorder the terms:
-14 + -8x + 8x2 = 0

Solving
-14 + -8x + 8x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-7 + -4x + 4x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-7 + -4x + 4x2)' equal to zero and attempt to solve: Simplifying -7 + -4x + 4x2 = 0 Solving -7 + -4x + 4x2 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. -1.75 + -1x + x2 = 0 Move the constant term to the right: Add '1.75' to each side of the equation. -1.75 + -1x + 1.75 + x2 = 0 + 1.75 Reorder the terms: -1.75 + 1.75 + -1x + x2 = 0 + 1.75 Combine like terms: -1.75 + 1.75 = 0.00 0.00 + -1x + x2 = 0 + 1.75 -1x + x2 = 0 + 1.75 Combine like terms: 0 + 1.75 = 1.75 -1x + x2 = 1.75 The x term is -1x. Take half its coefficient (-0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. -1x + 0.25 + x2 = 1.75 + 0.25 Reorder the terms: 0.25 + -1x + x2 = 1.75 + 0.25 Combine like terms: 1.75 + 0.25 = 2 0.25 + -1x + x2 = 2 Factor a perfect square on the left side: (x + -0.5)(x + -0.5) = 2 Calculate the square root of the right side: 1.414213562 Break this problem into two subproblems by setting (x + -0.5) equal to 1.414213562 and -1.414213562.

Subproblem 1

x + -0.5 = 1.414213562 Simplifying x + -0.5 = 1.414213562 Reorder the terms: -0.5 + x = 1.414213562 Solving -0.5 + x = 1.414213562 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = 1.414213562 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 1.414213562 + 0.5 x = 1.414213562 + 0.5 Combine like terms: 1.414213562 + 0.5 = 1.914213562 x = 1.914213562 Simplifying x = 1.914213562

Subproblem 2

x + -0.5 = -1.414213562 Simplifying x + -0.5 = -1.414213562 Reorder the terms: -0.5 + x = -1.414213562 Solving -0.5 + x = -1.414213562 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = -1.414213562 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -1.414213562 + 0.5 x = -1.414213562 + 0.5 Combine like terms: -1.414213562 + 0.5 = -0.914213562 x = -0.914213562 Simplifying x = -0.914213562

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.914213562, -0.914213562}

Solution

x = {1.914213562, -0.914213562}

See similar equations:

| 2-5=x-40 | | 8-3n=5 | | -4-8=24 | | 5x+3=5-2(4x+13) | | 5*12-2= | | ((6*x)+(5*y))=100 | | -4(-5+4)-(-4+1)= | | 8e-2=27.6 | | -4x+3(x-3)=0 | | 112=7(m+2) | | ((6*1)+(5*x))=100 | | -6=3vn+6 | | -3m+9+7m=4m+19 | | -7x+2(7x+5)=66 | | 81+z=63 | | 9e-3=60 | | F(X)=x^3-5x^2-5x+25 | | -2k^2-k+12=3k^2+6k | | x+11+x=23 | | 4+3n=16.30 | | 11b+5-7= | | log(4)(4.5-3x)=log(4)4.5-log(4)3x | | 10x-6=4x-3(5+x) | | 18=3(3x-16) | | 17=-2+3x | | 0.7(3+9)=14.7 | | x+3+x=12 | | -21+x=x+11 | | -2x-3(3x+2)=-61 | | 10x+4-4x=-20 | | 6n-3+2=17 | | x+3+x+12=90 |

Equations solver categories