x^2+8x-152=0

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Solution for x^2+8x-152=0 equation:


Simplifying
x2 + 8x + -152 = 0

Reorder the terms:
-152 + 8x + x2 = 0

Solving
-152 + 8x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '152' to each side of the equation.
-152 + 8x + 152 + x2 = 0 + 152

Reorder the terms:
-152 + 152 + 8x + x2 = 0 + 152

Combine like terms: -152 + 152 = 0
0 + 8x + x2 = 0 + 152
8x + x2 = 0 + 152

Combine like terms: 0 + 152 = 152
8x + x2 = 152

The x term is 8x.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8x + 16 + x2 = 152 + 16

Reorder the terms:
16 + 8x + x2 = 152 + 16

Combine like terms: 152 + 16 = 168
16 + 8x + x2 = 168

Factor a perfect square on the left side:
(x + 4)(x + 4) = 168

Calculate the square root of the right side: 12.961481397

Break this problem into two subproblems by setting 
(x + 4) equal to 12.961481397 and -12.961481397.

Subproblem 1

x + 4 = 12.961481397 Simplifying x + 4 = 12.961481397 Reorder the terms: 4 + x = 12.961481397 Solving 4 + x = 12.961481397 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = 12.961481397 + -4 Combine like terms: 4 + -4 = 0 0 + x = 12.961481397 + -4 x = 12.961481397 + -4 Combine like terms: 12.961481397 + -4 = 8.961481397 x = 8.961481397 Simplifying x = 8.961481397

Subproblem 2

x + 4 = -12.961481397 Simplifying x + 4 = -12.961481397 Reorder the terms: 4 + x = -12.961481397 Solving 4 + x = -12.961481397 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = -12.961481397 + -4 Combine like terms: 4 + -4 = 0 0 + x = -12.961481397 + -4 x = -12.961481397 + -4 Combine like terms: -12.961481397 + -4 = -16.961481397 x = -16.961481397 Simplifying x = -16.961481397

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.961481397, -16.961481397}

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