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 = 468
324 + -36x + x2 = 468

Factor a perfect square on the left side:
(x + -18)(x + -18) = 468

Calculate the square root of the right side: 21.633307653

Break this problem into two subproblems by setting 
(x + -18) equal to 21.633307653 and -21.633307653.

Subproblem 1

x + -18 = 21.633307653 Simplifying x + -18 = 21.633307653 Reorder the terms: -18 + x = 21.633307653 Solving -18 + x = 21.633307653 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 = 21.633307653 + 18 Combine like terms: -18 + 18 = 0 0 + x = 21.633307653 + 18 x = 21.633307653 + 18 Combine like terms: 21.633307653 + 18 = 39.633307653 x = 39.633307653 Simplifying x = 39.633307653

Subproblem 2

x + -18 = -21.633307653 Simplifying x + -18 = -21.633307653 Reorder the terms: -18 + x = -21.633307653 Solving -18 + x = -21.633307653 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 = -21.633307653 + 18 Combine like terms: -18 + 18 = 0 0 + x = -21.633307653 + 18 x = -21.633307653 + 18 Combine like terms: -21.633307653 + 18 = -3.633307653 x = -3.633307653 Simplifying x = -3.633307653

Solution

The solution to the problem is based on the solutions from the subproblems. x = {39.633307653, -3.633307653}

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