(x+8)(x+8)=2

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Solution for (x+8)(x+8)=2 equation:


Simplifying
(x + 8)(x + 8) = 2

Reorder the terms:
(8 + x)(x + 8) = 2

Reorder the terms:
(8 + x)(8 + x) = 2

Multiply (8 + x) * (8 + x)
(8(8 + x) + x(8 + x)) = 2
((8 * 8 + x * 8) + x(8 + x)) = 2
((64 + 8x) + x(8 + x)) = 2
(64 + 8x + (8 * x + x * x)) = 2
(64 + 8x + (8x + x2)) = 2

Combine like terms: 8x + 8x = 16x
(64 + 16x + x2) = 2

Solving
64 + 16x + x2 = 2

Solving for variable 'x'.

Reorder the terms:
64 + -2 + 16x + x2 = 2 + -2

Combine like terms: 64 + -2 = 62
62 + 16x + x2 = 2 + -2

Combine like terms: 2 + -2 = 0
62 + 16x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-62' to each side of the equation.
62 + 16x + -62 + x2 = 0 + -62

Reorder the terms:
62 + -62 + 16x + x2 = 0 + -62

Combine like terms: 62 + -62 = 0
0 + 16x + x2 = 0 + -62
16x + x2 = 0 + -62

Combine like terms: 0 + -62 = -62
16x + x2 = -62

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 = -62 + 64

Reorder the terms:
64 + 16x + x2 = -62 + 64

Combine like terms: -62 + 64 = 2
64 + 16x + x2 = 2

Factor a perfect square on the left side:
(x + 8)(x + 8) = 2

Calculate the square root of the right side: 1.414213562

Break this problem into two subproblems by setting 
(x + 8) equal to 1.414213562 and -1.414213562.

Subproblem 1

x + 8 = 1.414213562 Simplifying x + 8 = 1.414213562 Reorder the terms: 8 + x = 1.414213562 Solving 8 + x = 1.414213562 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 = 1.414213562 + -8 Combine like terms: 8 + -8 = 0 0 + x = 1.414213562 + -8 x = 1.414213562 + -8 Combine like terms: 1.414213562 + -8 = -6.585786438 x = -6.585786438 Simplifying x = -6.585786438

Subproblem 2

x + 8 = -1.414213562 Simplifying x + 8 = -1.414213562 Reorder the terms: 8 + x = -1.414213562 Solving 8 + x = -1.414213562 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 = -1.414213562 + -8 Combine like terms: 8 + -8 = 0 0 + x = -1.414213562 + -8 x = -1.414213562 + -8 Combine like terms: -1.414213562 + -8 = -9.414213562 x = -9.414213562 Simplifying x = -9.414213562

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-6.585786438, -9.414213562}

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