x^2+36x+36=9

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Solution for x^2+36x+36=9 equation:


Simplifying
x2 + 36x + 36 = 9

Reorder the terms:
36 + 36x + x2 = 9

Solving
36 + 36x + x2 = 9

Solving for variable 'x'.

Reorder the terms:
36 + -9 + 36x + x2 = 9 + -9

Combine like terms: 36 + -9 = 27
27 + 36x + x2 = 9 + -9

Combine like terms: 9 + -9 = 0
27 + 36x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-27' to each side of the equation.
27 + 36x + -27 + x2 = 0 + -27

Reorder the terms:
27 + -27 + 36x + x2 = 0 + -27

Combine like terms: 27 + -27 = 0
0 + 36x + x2 = 0 + -27
36x + x2 = 0 + -27

Combine like terms: 0 + -27 = -27
36x + x2 = -27

The x term is 36x.  Take half its coefficient (18).
Square it (324) and add it to both sides.

Add '324' to each side of the equation.
36x + 324 + x2 = -27 + 324

Reorder the terms:
324 + 36x + x2 = -27 + 324

Combine like terms: -27 + 324 = 297
324 + 36x + x2 = 297

Factor a perfect square on the left side:
(x + 18)(x + 18) = 297

Calculate the square root of the right side: 17.23368794

Break this problem into two subproblems by setting 
(x + 18) equal to 17.23368794 and -17.23368794.

Subproblem 1

x + 18 = 17.23368794 Simplifying x + 18 = 17.23368794 Reorder the terms: 18 + x = 17.23368794 Solving 18 + x = 17.23368794 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-18' to each side of the equation. 18 + -18 + x = 17.23368794 + -18 Combine like terms: 18 + -18 = 0 0 + x = 17.23368794 + -18 x = 17.23368794 + -18 Combine like terms: 17.23368794 + -18 = -0.76631206 x = -0.76631206 Simplifying x = -0.76631206

Subproblem 2

x + 18 = -17.23368794 Simplifying x + 18 = -17.23368794 Reorder the terms: 18 + x = -17.23368794 Solving 18 + x = -17.23368794 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-18' to each side of the equation. 18 + -18 + x = -17.23368794 + -18 Combine like terms: 18 + -18 = 0 0 + x = -17.23368794 + -18 x = -17.23368794 + -18 Combine like terms: -17.23368794 + -18 = -35.23368794 x = -35.23368794 Simplifying x = -35.23368794

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.76631206, -35.23368794}

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