x^2+32x-126=0

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Solution for x^2+32x-126=0 equation:


Simplifying
x2 + 32x + -126 = 0

Reorder the terms:
-126 + 32x + x2 = 0

Solving
-126 + 32x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '126' to each side of the equation.
-126 + 32x + 126 + x2 = 0 + 126

Reorder the terms:
-126 + 126 + 32x + x2 = 0 + 126

Combine like terms: -126 + 126 = 0
0 + 32x + x2 = 0 + 126
32x + x2 = 0 + 126

Combine like terms: 0 + 126 = 126
32x + x2 = 126

The x term is 32x.  Take half its coefficient (16).
Square it (256) and add it to both sides.

Add '256' to each side of the equation.
32x + 256 + x2 = 126 + 256

Reorder the terms:
256 + 32x + x2 = 126 + 256

Combine like terms: 126 + 256 = 382
256 + 32x + x2 = 382

Factor a perfect square on the left side:
(x + 16)(x + 16) = 382

Calculate the square root of the right side: 19.544820286

Break this problem into two subproblems by setting 
(x + 16) equal to 19.544820286 and -19.544820286.

Subproblem 1

x + 16 = 19.544820286 Simplifying x + 16 = 19.544820286 Reorder the terms: 16 + x = 19.544820286 Solving 16 + x = 19.544820286 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-16' to each side of the equation. 16 + -16 + x = 19.544820286 + -16 Combine like terms: 16 + -16 = 0 0 + x = 19.544820286 + -16 x = 19.544820286 + -16 Combine like terms: 19.544820286 + -16 = 3.544820286 x = 3.544820286 Simplifying x = 3.544820286

Subproblem 2

x + 16 = -19.544820286 Simplifying x + 16 = -19.544820286 Reorder the terms: 16 + x = -19.544820286 Solving 16 + x = -19.544820286 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-16' to each side of the equation. 16 + -16 + x = -19.544820286 + -16 Combine like terms: 16 + -16 = 0 0 + x = -19.544820286 + -16 x = -19.544820286 + -16 Combine like terms: -19.544820286 + -16 = -35.544820286 x = -35.544820286 Simplifying x = -35.544820286

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.544820286, -35.544820286}

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