x^2+18x-96=0

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Solution for x^2+18x-96=0 equation:


Simplifying
x2 + 18x + -96 = 0

Reorder the terms:
-96 + 18x + x2 = 0

Solving
-96 + 18x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '96' to each side of the equation.
-96 + 18x + 96 + x2 = 0 + 96

Reorder the terms:
-96 + 96 + 18x + x2 = 0 + 96

Combine like terms: -96 + 96 = 0
0 + 18x + x2 = 0 + 96
18x + x2 = 0 + 96

Combine like terms: 0 + 96 = 96
18x + x2 = 96

The x term is 18x.  Take half its coefficient (9).
Square it (81) and add it to both sides.

Add '81' to each side of the equation.
18x + 81 + x2 = 96 + 81

Reorder the terms:
81 + 18x + x2 = 96 + 81

Combine like terms: 96 + 81 = 177
81 + 18x + x2 = 177

Factor a perfect square on the left side:
(x + 9)(x + 9) = 177

Calculate the square root of the right side: 13.304134696

Break this problem into two subproblems by setting 
(x + 9) equal to 13.304134696 and -13.304134696.

Subproblem 1

x + 9 = 13.304134696 Simplifying x + 9 = 13.304134696 Reorder the terms: 9 + x = 13.304134696 Solving 9 + x = 13.304134696 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + x = 13.304134696 + -9 Combine like terms: 9 + -9 = 0 0 + x = 13.304134696 + -9 x = 13.304134696 + -9 Combine like terms: 13.304134696 + -9 = 4.304134696 x = 4.304134696 Simplifying x = 4.304134696

Subproblem 2

x + 9 = -13.304134696 Simplifying x + 9 = -13.304134696 Reorder the terms: 9 + x = -13.304134696 Solving 9 + x = -13.304134696 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + x = -13.304134696 + -9 Combine like terms: 9 + -9 = 0 0 + x = -13.304134696 + -9 x = -13.304134696 + -9 Combine like terms: -13.304134696 + -9 = -22.304134696 x = -22.304134696 Simplifying x = -22.304134696

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.304134696, -22.304134696}

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