x^2+36x-198=0

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Solution for x^2+36x-198=0 equation:


Simplifying
x2 + 36x + -198 = 0

Reorder the terms:
-198 + 36x + x2 = 0

Solving
-198 + 36x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '198' to each side of the equation.
-198 + 36x + 198 + x2 = 0 + 198

Reorder the terms:
-198 + 198 + 36x + x2 = 0 + 198

Combine like terms: -198 + 198 = 0
0 + 36x + x2 = 0 + 198
36x + x2 = 0 + 198

Combine like terms: 0 + 198 = 198
36x + x2 = 198

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 = 198 + 324

Reorder the terms:
324 + 36x + x2 = 198 + 324

Combine like terms: 198 + 324 = 522
324 + 36x + x2 = 522

Factor a perfect square on the left side:
(x + 18)(x + 18) = 522

Calculate the square root of the right side: 22.847319318

Break this problem into two subproblems by setting 
(x + 18) equal to 22.847319318 and -22.847319318.

Subproblem 1

x + 18 = 22.847319318 Simplifying x + 18 = 22.847319318 Reorder the terms: 18 + x = 22.847319318 Solving 18 + x = 22.847319318 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 = 22.847319318 + -18 Combine like terms: 18 + -18 = 0 0 + x = 22.847319318 + -18 x = 22.847319318 + -18 Combine like terms: 22.847319318 + -18 = 4.847319318 x = 4.847319318 Simplifying x = 4.847319318

Subproblem 2

x + 18 = -22.847319318 Simplifying x + 18 = -22.847319318 Reorder the terms: 18 + x = -22.847319318 Solving 18 + x = -22.847319318 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 = -22.847319318 + -18 Combine like terms: 18 + -18 = 0 0 + x = -22.847319318 + -18 x = -22.847319318 + -18 Combine like terms: -22.847319318 + -18 = -40.847319318 x = -40.847319318 Simplifying x = -40.847319318

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.847319318, -40.847319318}

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