x^2+16x+64=6

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Solution for x^2+16x+64=6 equation:


Simplifying
x2 + 16x + 64 = 6

Reorder the terms:
64 + 16x + x2 = 6

Solving
64 + 16x + x2 = 6

Solving for variable 'x'.

Reorder the terms:
64 + -6 + 16x + x2 = 6 + -6

Combine like terms: 64 + -6 = 58
58 + 16x + x2 = 6 + -6

Combine like terms: 6 + -6 = 0
58 + 16x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-58' to each side of the equation.
58 + 16x + -58 + x2 = 0 + -58

Reorder the terms:
58 + -58 + 16x + x2 = 0 + -58

Combine like terms: 58 + -58 = 0
0 + 16x + x2 = 0 + -58
16x + x2 = 0 + -58

Combine like terms: 0 + -58 = -58
16x + x2 = -58

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 = -58 + 64

Reorder the terms:
64 + 16x + x2 = -58 + 64

Combine like terms: -58 + 64 = 6
64 + 16x + x2 = 6

Factor a perfect square on the left side:
(x + 8)(x + 8) = 6

Calculate the square root of the right side: 2.449489743

Break this problem into two subproblems by setting 
(x + 8) equal to 2.449489743 and -2.449489743.

Subproblem 1

x + 8 = 2.449489743 Simplifying x + 8 = 2.449489743 Reorder the terms: 8 + x = 2.449489743 Solving 8 + x = 2.449489743 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 = 2.449489743 + -8 Combine like terms: 8 + -8 = 0 0 + x = 2.449489743 + -8 x = 2.449489743 + -8 Combine like terms: 2.449489743 + -8 = -5.550510257 x = -5.550510257 Simplifying x = -5.550510257

Subproblem 2

x + 8 = -2.449489743 Simplifying x + 8 = -2.449489743 Reorder the terms: 8 + x = -2.449489743 Solving 8 + x = -2.449489743 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 = -2.449489743 + -8 Combine like terms: 8 + -8 = 0 0 + x = -2.449489743 + -8 x = -2.449489743 + -8 Combine like terms: -2.449489743 + -8 = -10.449489743 x = -10.449489743 Simplifying x = -10.449489743

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-5.550510257, -10.449489743}

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