2x^2-32x-111=0

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Solution for 2x^2-32x-111=0 equation:


Simplifying
2x2 + -32x + -111 = 0

Reorder the terms:
-111 + -32x + 2x2 = 0

Solving
-111 + -32x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-55.5 + -16x + x2 = 0

Move the constant term to the right:

Add '55.5' to each side of the equation.
-55.5 + -16x + 55.5 + x2 = 0 + 55.5

Reorder the terms:
-55.5 + 55.5 + -16x + x2 = 0 + 55.5

Combine like terms: -55.5 + 55.5 = 0.0
0.0 + -16x + x2 = 0 + 55.5
-16x + x2 = 0 + 55.5

Combine like terms: 0 + 55.5 = 55.5
-16x + x2 = 55.5

The x term is -16x.  Take half its coefficient (-8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
-16x + 64 + x2 = 55.5 + 64

Reorder the terms:
64 + -16x + x2 = 55.5 + 64

Combine like terms: 55.5 + 64 = 119.5
64 + -16x + x2 = 119.5

Factor a perfect square on the left side:
(x + -8)(x + -8) = 119.5

Calculate the square root of the right side: 10.931605555

Break this problem into two subproblems by setting 
(x + -8) equal to 10.931605555 and -10.931605555.

Subproblem 1

x + -8 = 10.931605555 Simplifying x + -8 = 10.931605555 Reorder the terms: -8 + x = 10.931605555 Solving -8 + x = 10.931605555 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + x = 10.931605555 + 8 Combine like terms: -8 + 8 = 0 0 + x = 10.931605555 + 8 x = 10.931605555 + 8 Combine like terms: 10.931605555 + 8 = 18.931605555 x = 18.931605555 Simplifying x = 18.931605555

Subproblem 2

x + -8 = -10.931605555 Simplifying x + -8 = -10.931605555 Reorder the terms: -8 + x = -10.931605555 Solving -8 + x = -10.931605555 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + x = -10.931605555 + 8 Combine like terms: -8 + 8 = 0 0 + x = -10.931605555 + 8 x = -10.931605555 + 8 Combine like terms: -10.931605555 + 8 = -2.931605555 x = -2.931605555 Simplifying x = -2.931605555

Solution

The solution to the problem is based on the solutions from the subproblems. x = {18.931605555, -2.931605555}

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