x^2+32x-128=0

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Solution for x^2+32x-128=0 equation:


Simplifying
x2 + 32x + -128 = 0

Reorder the terms:
-128 + 32x + x2 = 0

Solving
-128 + 32x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '128' to each side of the equation.
-128 + 32x + 128 + x2 = 0 + 128

Reorder the terms:
-128 + 128 + 32x + x2 = 0 + 128

Combine like terms: -128 + 128 = 0
0 + 32x + x2 = 0 + 128
32x + x2 = 0 + 128

Combine like terms: 0 + 128 = 128
32x + x2 = 128

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 = 128 + 256

Reorder the terms:
256 + 32x + x2 = 128 + 256

Combine like terms: 128 + 256 = 384
256 + 32x + x2 = 384

Factor a perfect square on the left side:
(x + 16)(x + 16) = 384

Calculate the square root of the right side: 19.595917942

Break this problem into two subproblems by setting 
(x + 16) equal to 19.595917942 and -19.595917942.

Subproblem 1

x + 16 = 19.595917942 Simplifying x + 16 = 19.595917942 Reorder the terms: 16 + x = 19.595917942 Solving 16 + x = 19.595917942 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 = 19.595917942 + -16 Combine like terms: 16 + -16 = 0 0 + x = 19.595917942 + -16 x = 19.595917942 + -16 Combine like terms: 19.595917942 + -16 = 3.595917942 x = 3.595917942 Simplifying x = 3.595917942

Subproblem 2

x + 16 = -19.595917942 Simplifying x + 16 = -19.595917942 Reorder the terms: 16 + x = -19.595917942 Solving 16 + x = -19.595917942 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 = -19.595917942 + -16 Combine like terms: 16 + -16 = 0 0 + x = -19.595917942 + -16 x = -19.595917942 + -16 Combine like terms: -19.595917942 + -16 = -35.595917942 x = -35.595917942 Simplifying x = -35.595917942

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.595917942, -35.595917942}

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