(x+6)(x-6)=10x+(x-4)

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Solution for (x+6)(x-6)=10x+(x-4) equation:


Simplifying
(x + 6)(x + -6) = 10x + (x + -4)

Reorder the terms:
(6 + x)(x + -6) = 10x + (x + -4)

Reorder the terms:
(6 + x)(-6 + x) = 10x + (x + -4)

Multiply (6 + x) * (-6 + x)
(6(-6 + x) + x(-6 + x)) = 10x + (x + -4)
((-6 * 6 + x * 6) + x(-6 + x)) = 10x + (x + -4)
((-36 + 6x) + x(-6 + x)) = 10x + (x + -4)
(-36 + 6x + (-6 * x + x * x)) = 10x + (x + -4)
(-36 + 6x + (-6x + x2)) = 10x + (x + -4)

Combine like terms: 6x + -6x = 0
(-36 + 0 + x2) = 10x + (x + -4)
(-36 + x2) = 10x + (x + -4)

Reorder the terms:
-36 + x2 = 10x + (-4 + x)

Remove parenthesis around (-4 + x)
-36 + x2 = 10x + -4 + x

Reorder the terms:
-36 + x2 = -4 + 10x + x

Combine like terms: 10x + x = 11x
-36 + x2 = -4 + 11x

Solving
-36 + x2 = -4 + 11x

Solving for variable 'x'.

Reorder the terms:
-36 + 4 + -11x + x2 = -4 + 11x + 4 + -11x

Combine like terms: -36 + 4 = -32
-32 + -11x + x2 = -4 + 11x + 4 + -11x

Reorder the terms:
-32 + -11x + x2 = -4 + 4 + 11x + -11x

Combine like terms: -4 + 4 = 0
-32 + -11x + x2 = 0 + 11x + -11x
-32 + -11x + x2 = 11x + -11x

Combine like terms: 11x + -11x = 0
-32 + -11x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '32' to each side of the equation.
-32 + -11x + 32 + x2 = 0 + 32

Reorder the terms:
-32 + 32 + -11x + x2 = 0 + 32

Combine like terms: -32 + 32 = 0
0 + -11x + x2 = 0 + 32
-11x + x2 = 0 + 32

Combine like terms: 0 + 32 = 32
-11x + x2 = 32

The x term is -11x.  Take half its coefficient (-5.5).
Square it (30.25) and add it to both sides.

Add '30.25' to each side of the equation.
-11x + 30.25 + x2 = 32 + 30.25

Reorder the terms:
30.25 + -11x + x2 = 32 + 30.25

Combine like terms: 32 + 30.25 = 62.25
30.25 + -11x + x2 = 62.25

Factor a perfect square on the left side:
(x + -5.5)(x + -5.5) = 62.25

Calculate the square root of the right side: 7.889866919

Break this problem into two subproblems by setting 
(x + -5.5) equal to 7.889866919 and -7.889866919.

Subproblem 1

x + -5.5 = 7.889866919 Simplifying x + -5.5 = 7.889866919 Reorder the terms: -5.5 + x = 7.889866919 Solving -5.5 + x = 7.889866919 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + x = 7.889866919 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + x = 7.889866919 + 5.5 x = 7.889866919 + 5.5 Combine like terms: 7.889866919 + 5.5 = 13.389866919 x = 13.389866919 Simplifying x = 13.389866919

Subproblem 2

x + -5.5 = -7.889866919 Simplifying x + -5.5 = -7.889866919 Reorder the terms: -5.5 + x = -7.889866919 Solving -5.5 + x = -7.889866919 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + x = -7.889866919 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + x = -7.889866919 + 5.5 x = -7.889866919 + 5.5 Combine like terms: -7.889866919 + 5.5 = -2.389866919 x = -2.389866919 Simplifying x = -2.389866919

Solution

The solution to the problem is based on the solutions from the subproblems. x = {13.389866919, -2.389866919}

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