x^2+8x+8=180

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Solution for x^2+8x+8=180 equation:


Simplifying
x2 + 8x + 8 = 180

Reorder the terms:
8 + 8x + x2 = 180

Solving
8 + 8x + x2 = 180

Solving for variable 'x'.

Reorder the terms:
8 + -180 + 8x + x2 = 180 + -180

Combine like terms: 8 + -180 = -172
-172 + 8x + x2 = 180 + -180

Combine like terms: 180 + -180 = 0
-172 + 8x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '172' to each side of the equation.
-172 + 8x + 172 + x2 = 0 + 172

Reorder the terms:
-172 + 172 + 8x + x2 = 0 + 172

Combine like terms: -172 + 172 = 0
0 + 8x + x2 = 0 + 172
8x + x2 = 0 + 172

Combine like terms: 0 + 172 = 172
8x + x2 = 172

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 = 172 + 16

Reorder the terms:
16 + 8x + x2 = 172 + 16

Combine like terms: 172 + 16 = 188
16 + 8x + x2 = 188

Factor a perfect square on the left side:
(x + 4)(x + 4) = 188

Calculate the square root of the right side: 13.711309201

Break this problem into two subproblems by setting 
(x + 4) equal to 13.711309201 and -13.711309201.

Subproblem 1

x + 4 = 13.711309201 Simplifying x + 4 = 13.711309201 Reorder the terms: 4 + x = 13.711309201 Solving 4 + x = 13.711309201 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 = 13.711309201 + -4 Combine like terms: 4 + -4 = 0 0 + x = 13.711309201 + -4 x = 13.711309201 + -4 Combine like terms: 13.711309201 + -4 = 9.711309201 x = 9.711309201 Simplifying x = 9.711309201

Subproblem 2

x + 4 = -13.711309201 Simplifying x + 4 = -13.711309201 Reorder the terms: 4 + x = -13.711309201 Solving 4 + x = -13.711309201 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 = -13.711309201 + -4 Combine like terms: 4 + -4 = 0 0 + x = -13.711309201 + -4 x = -13.711309201 + -4 Combine like terms: -13.711309201 + -4 = -17.711309201 x = -17.711309201 Simplifying x = -17.711309201

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.711309201, -17.711309201}

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