9x+64=x^2+26x+12

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Solution for 9x+64=x^2+26x+12 equation:


Simplifying
9x + 64 = x2 + 26x + 12

Reorder the terms:
64 + 9x = x2 + 26x + 12

Reorder the terms:
64 + 9x = 12 + 26x + x2

Solving
64 + 9x = 12 + 26x + x2

Solving for variable 'x'.

Reorder the terms:
64 + -12 + 9x + -26x + -1x2 = 12 + 26x + x2 + -12 + -26x + -1x2

Combine like terms: 64 + -12 = 52
52 + 9x + -26x + -1x2 = 12 + 26x + x2 + -12 + -26x + -1x2

Combine like terms: 9x + -26x = -17x
52 + -17x + -1x2 = 12 + 26x + x2 + -12 + -26x + -1x2

Reorder the terms:
52 + -17x + -1x2 = 12 + -12 + 26x + -26x + x2 + -1x2

Combine like terms: 12 + -12 = 0
52 + -17x + -1x2 = 0 + 26x + -26x + x2 + -1x2
52 + -17x + -1x2 = 26x + -26x + x2 + -1x2

Combine like terms: 26x + -26x = 0
52 + -17x + -1x2 = 0 + x2 + -1x2
52 + -17x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
52 + -17x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-52 + 17x + x2 = 0

Move the constant term to the right:

Add '52' to each side of the equation.
-52 + 17x + 52 + x2 = 0 + 52

Reorder the terms:
-52 + 52 + 17x + x2 = 0 + 52

Combine like terms: -52 + 52 = 0
0 + 17x + x2 = 0 + 52
17x + x2 = 0 + 52

Combine like terms: 0 + 52 = 52
17x + x2 = 52

The x term is 17x.  Take half its coefficient (8.5).
Square it (72.25) and add it to both sides.

Add '72.25' to each side of the equation.
17x + 72.25 + x2 = 52 + 72.25

Reorder the terms:
72.25 + 17x + x2 = 52 + 72.25

Combine like terms: 52 + 72.25 = 124.25
72.25 + 17x + x2 = 124.25

Factor a perfect square on the left side:
(x + 8.5)(x + 8.5) = 124.25

Calculate the square root of the right side: 11.146748405

Break this problem into two subproblems by setting 
(x + 8.5) equal to 11.146748405 and -11.146748405.

Subproblem 1

x + 8.5 = 11.146748405 Simplifying x + 8.5 = 11.146748405 Reorder the terms: 8.5 + x = 11.146748405 Solving 8.5 + x = 11.146748405 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8.5' to each side of the equation. 8.5 + -8.5 + x = 11.146748405 + -8.5 Combine like terms: 8.5 + -8.5 = 0.0 0.0 + x = 11.146748405 + -8.5 x = 11.146748405 + -8.5 Combine like terms: 11.146748405 + -8.5 = 2.646748405 x = 2.646748405 Simplifying x = 2.646748405

Subproblem 2

x + 8.5 = -11.146748405 Simplifying x + 8.5 = -11.146748405 Reorder the terms: 8.5 + x = -11.146748405 Solving 8.5 + x = -11.146748405 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8.5' to each side of the equation. 8.5 + -8.5 + x = -11.146748405 + -8.5 Combine like terms: 8.5 + -8.5 = 0.0 0.0 + x = -11.146748405 + -8.5 x = -11.146748405 + -8.5 Combine like terms: -11.146748405 + -8.5 = -19.646748405 x = -19.646748405 Simplifying x = -19.646748405

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.646748405, -19.646748405}

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