-114-8x=11-8(x)(x)

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Solution for -114-8x=11-8(x)(x) equation:


Simplifying
-114 + -8x = 11 + -8(x)(x)

Multiply x * x
-114 + -8x = 11 + -8x2

Solving
-114 + -8x = 11 + -8x2

Solving for variable 'x'.

Reorder the terms:
-114 + -11 + -8x + 8x2 = 11 + -8x2 + -11 + 8x2

Combine like terms: -114 + -11 = -125
-125 + -8x + 8x2 = 11 + -8x2 + -11 + 8x2

Reorder the terms:
-125 + -8x + 8x2 = 11 + -11 + -8x2 + 8x2

Combine like terms: 11 + -11 = 0
-125 + -8x + 8x2 = 0 + -8x2 + 8x2
-125 + -8x + 8x2 = -8x2 + 8x2

Combine like terms: -8x2 + 8x2 = 0
-125 + -8x + 8x2 = 0

Begin completing the square.  Divide all terms by
8 the coefficient of the squared term: 

Divide each side by '8'.
-15.625 + -1x + x2 = 0

Move the constant term to the right:

Add '15.625' to each side of the equation.
-15.625 + -1x + 15.625 + x2 = 0 + 15.625

Reorder the terms:
-15.625 + 15.625 + -1x + x2 = 0 + 15.625

Combine like terms: -15.625 + 15.625 = 0.000
0.000 + -1x + x2 = 0 + 15.625
-1x + x2 = 0 + 15.625

Combine like terms: 0 + 15.625 = 15.625
-1x + x2 = 15.625

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 = 15.625 + 0.25

Reorder the terms:
0.25 + -1x + x2 = 15.625 + 0.25

Combine like terms: 15.625 + 0.25 = 15.875
0.25 + -1x + x2 = 15.875

Factor a perfect square on the left side:
(x + -0.5)(x + -0.5) = 15.875

Calculate the square root of the right side: 3.984344363

Break this problem into two subproblems by setting 
(x + -0.5) equal to 3.984344363 and -3.984344363.

Subproblem 1

x + -0.5 = 3.984344363 Simplifying x + -0.5 = 3.984344363 Reorder the terms: -0.5 + x = 3.984344363 Solving -0.5 + x = 3.984344363 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 = 3.984344363 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 3.984344363 + 0.5 x = 3.984344363 + 0.5 Combine like terms: 3.984344363 + 0.5 = 4.484344363 x = 4.484344363 Simplifying x = 4.484344363

Subproblem 2

x + -0.5 = -3.984344363 Simplifying x + -0.5 = -3.984344363 Reorder the terms: -0.5 + x = -3.984344363 Solving -0.5 + x = -3.984344363 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 = -3.984344363 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -3.984344363 + 0.5 x = -3.984344363 + 0.5 Combine like terms: -3.984344363 + 0.5 = -3.484344363 x = -3.484344363 Simplifying x = -3.484344363

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.484344363, -3.484344363}

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