x^2+36x+144=0

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Solution for x^2+36x+144=0 equation:


Simplifying
x2 + 36x + 144 = 0

Reorder the terms:
144 + 36x + x2 = 0

Solving
144 + 36x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-144' to each side of the equation.
144 + 36x + -144 + x2 = 0 + -144

Reorder the terms:
144 + -144 + 36x + x2 = 0 + -144

Combine like terms: 144 + -144 = 0
0 + 36x + x2 = 0 + -144
36x + x2 = 0 + -144

Combine like terms: 0 + -144 = -144
36x + x2 = -144

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 = -144 + 324

Reorder the terms:
324 + 36x + x2 = -144 + 324

Combine like terms: -144 + 324 = 180
324 + 36x + x2 = 180

Factor a perfect square on the left side:
(x + 18)(x + 18) = 180

Calculate the square root of the right side: 13.416407865

Break this problem into two subproblems by setting 
(x + 18) equal to 13.416407865 and -13.416407865.

Subproblem 1

x + 18 = 13.416407865 Simplifying x + 18 = 13.416407865 Reorder the terms: 18 + x = 13.416407865 Solving 18 + x = 13.416407865 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 = 13.416407865 + -18 Combine like terms: 18 + -18 = 0 0 + x = 13.416407865 + -18 x = 13.416407865 + -18 Combine like terms: 13.416407865 + -18 = -4.583592135 x = -4.583592135 Simplifying x = -4.583592135

Subproblem 2

x + 18 = -13.416407865 Simplifying x + 18 = -13.416407865 Reorder the terms: 18 + x = -13.416407865 Solving 18 + x = -13.416407865 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 = -13.416407865 + -18 Combine like terms: 18 + -18 = 0 0 + x = -13.416407865 + -18 x = -13.416407865 + -18 Combine like terms: -13.416407865 + -18 = -31.416407865 x = -31.416407865 Simplifying x = -31.416407865

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-4.583592135, -31.416407865}

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