x^2+24x-135=0

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Solution for x^2+24x-135=0 equation:


Simplifying
x2 + 24x + -135 = 0

Reorder the terms:
-135 + 24x + x2 = 0

Solving
-135 + 24x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '135' to each side of the equation.
-135 + 24x + 135 + x2 = 0 + 135

Reorder the terms:
-135 + 135 + 24x + x2 = 0 + 135

Combine like terms: -135 + 135 = 0
0 + 24x + x2 = 0 + 135
24x + x2 = 0 + 135

Combine like terms: 0 + 135 = 135
24x + x2 = 135

The x term is 24x.  Take half its coefficient (12).
Square it (144) and add it to both sides.

Add '144' to each side of the equation.
24x + 144 + x2 = 135 + 144

Reorder the terms:
144 + 24x + x2 = 135 + 144

Combine like terms: 135 + 144 = 279
144 + 24x + x2 = 279

Factor a perfect square on the left side:
(x + 12)(x + 12) = 279

Calculate the square root of the right side: 16.703293088

Break this problem into two subproblems by setting 
(x + 12) equal to 16.703293088 and -16.703293088.

Subproblem 1

x + 12 = 16.703293088 Simplifying x + 12 = 16.703293088 Reorder the terms: 12 + x = 16.703293088 Solving 12 + x = 16.703293088 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + x = 16.703293088 + -12 Combine like terms: 12 + -12 = 0 0 + x = 16.703293088 + -12 x = 16.703293088 + -12 Combine like terms: 16.703293088 + -12 = 4.703293088 x = 4.703293088 Simplifying x = 4.703293088

Subproblem 2

x + 12 = -16.703293088 Simplifying x + 12 = -16.703293088 Reorder the terms: 12 + x = -16.703293088 Solving 12 + x = -16.703293088 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + x = -16.703293088 + -12 Combine like terms: 12 + -12 = 0 0 + x = -16.703293088 + -12 x = -16.703293088 + -12 Combine like terms: -16.703293088 + -12 = -28.703293088 x = -28.703293088 Simplifying x = -28.703293088

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.703293088, -28.703293088}

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