x^2-6x-9-8-6x=26

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Solution for x^2-6x-9-8-6x=26 equation:


Simplifying
x2 + -6x + -9 + -8 + -6x = 26

Reorder the terms:
-9 + -8 + -6x + -6x + x2 = 26

Combine like terms: -9 + -8 = -17
-17 + -6x + -6x + x2 = 26

Combine like terms: -6x + -6x = -12x
-17 + -12x + x2 = 26

Solving
-17 + -12x + x2 = 26

Solving for variable 'x'.

Reorder the terms:
-17 + -26 + -12x + x2 = 26 + -26

Combine like terms: -17 + -26 = -43
-43 + -12x + x2 = 26 + -26

Combine like terms: 26 + -26 = 0
-43 + -12x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '43' to each side of the equation.
-43 + -12x + 43 + x2 = 0 + 43

Reorder the terms:
-43 + 43 + -12x + x2 = 0 + 43

Combine like terms: -43 + 43 = 0
0 + -12x + x2 = 0 + 43
-12x + x2 = 0 + 43

Combine like terms: 0 + 43 = 43
-12x + x2 = 43

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 = 43 + 36

Reorder the terms:
36 + -12x + x2 = 43 + 36

Combine like terms: 43 + 36 = 79
36 + -12x + x2 = 79

Factor a perfect square on the left side:
(x + -6)(x + -6) = 79

Calculate the square root of the right side: 8.888194417

Break this problem into two subproblems by setting 
(x + -6) equal to 8.888194417 and -8.888194417.

Subproblem 1

x + -6 = 8.888194417 Simplifying x + -6 = 8.888194417 Reorder the terms: -6 + x = 8.888194417 Solving -6 + x = 8.888194417 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 = 8.888194417 + 6 Combine like terms: -6 + 6 = 0 0 + x = 8.888194417 + 6 x = 8.888194417 + 6 Combine like terms: 8.888194417 + 6 = 14.888194417 x = 14.888194417 Simplifying x = 14.888194417

Subproblem 2

x + -6 = -8.888194417 Simplifying x + -6 = -8.888194417 Reorder the terms: -6 + x = -8.888194417 Solving -6 + x = -8.888194417 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 = -8.888194417 + 6 Combine like terms: -6 + 6 = 0 0 + x = -8.888194417 + 6 x = -8.888194417 + 6 Combine like terms: -8.888194417 + 6 = -2.888194417 x = -2.888194417 Simplifying x = -2.888194417

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.888194417, -2.888194417}

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