x^2-12x-22=64

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Solution for x^2-12x-22=64 equation:


Simplifying
x2 + -12x + -22 = 64

Reorder the terms:
-22 + -12x + x2 = 64

Solving
-22 + -12x + x2 = 64

Solving for variable 'x'.

Reorder the terms:
-22 + -64 + -12x + x2 = 64 + -64

Combine like terms: -22 + -64 = -86
-86 + -12x + x2 = 64 + -64

Combine like terms: 64 + -64 = 0
-86 + -12x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '86' to each side of the equation.
-86 + -12x + 86 + x2 = 0 + 86

Reorder the terms:
-86 + 86 + -12x + x2 = 0 + 86

Combine like terms: -86 + 86 = 0
0 + -12x + x2 = 0 + 86
-12x + x2 = 0 + 86

Combine like terms: 0 + 86 = 86
-12x + x2 = 86

The x term is -12x.  Take half its coefficient (-6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
-12x + 36 + x2 = 86 + 36

Reorder the terms:
36 + -12x + x2 = 86 + 36

Combine like terms: 86 + 36 = 122
36 + -12x + x2 = 122

Factor a perfect square on the left side:
(x + -6)(x + -6) = 122

Calculate the square root of the right side: 11.045361017

Break this problem into two subproblems by setting 
(x + -6) equal to 11.045361017 and -11.045361017.

Subproblem 1

x + -6 = 11.045361017 Simplifying x + -6 = 11.045361017 Reorder the terms: -6 + x = 11.045361017 Solving -6 + x = 11.045361017 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + x = 11.045361017 + 6 Combine like terms: -6 + 6 = 0 0 + x = 11.045361017 + 6 x = 11.045361017 + 6 Combine like terms: 11.045361017 + 6 = 17.045361017 x = 17.045361017 Simplifying x = 17.045361017

Subproblem 2

x + -6 = -11.045361017 Simplifying x + -6 = -11.045361017 Reorder the terms: -6 + x = -11.045361017 Solving -6 + x = -11.045361017 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + x = -11.045361017 + 6 Combine like terms: -6 + 6 = 0 0 + x = -11.045361017 + 6 x = -11.045361017 + 6 Combine like terms: -11.045361017 + 6 = -5.045361017 x = -5.045361017 Simplifying x = -5.045361017

Solution

The solution to the problem is based on the solutions from the subproblems. x = {17.045361017, -5.045361017}

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