x^2+6x=96

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Solution for x^2+6x=96 equation:


Simplifying
x2 + 6x = 96

Reorder the terms:
6x + x2 = 96

Solving
6x + x2 = 96

Solving for variable 'x'.

Reorder the terms:
-96 + 6x + x2 = 96 + -96

Combine like terms: 96 + -96 = 0
-96 + 6x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '96' to each side of the equation.
-96 + 6x + 96 + x2 = 0 + 96

Reorder the terms:
-96 + 96 + 6x + x2 = 0 + 96

Combine like terms: -96 + 96 = 0
0 + 6x + x2 = 0 + 96
6x + x2 = 0 + 96

Combine like terms: 0 + 96 = 96
6x + x2 = 96

The x term is 6x.  Take half its coefficient (3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
6x + 9 + x2 = 96 + 9

Reorder the terms:
9 + 6x + x2 = 96 + 9

Combine like terms: 96 + 9 = 105
9 + 6x + x2 = 105

Factor a perfect square on the left side:
(x + 3)(x + 3) = 105

Calculate the square root of the right side: 10.246950766

Break this problem into two subproblems by setting 
(x + 3) equal to 10.246950766 and -10.246950766.

Subproblem 1

x + 3 = 10.246950766 Simplifying x + 3 = 10.246950766 Reorder the terms: 3 + x = 10.246950766 Solving 3 + x = 10.246950766 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = 10.246950766 + -3 Combine like terms: 3 + -3 = 0 0 + x = 10.246950766 + -3 x = 10.246950766 + -3 Combine like terms: 10.246950766 + -3 = 7.246950766 x = 7.246950766 Simplifying x = 7.246950766

Subproblem 2

x + 3 = -10.246950766 Simplifying x + 3 = -10.246950766 Reorder the terms: 3 + x = -10.246950766 Solving 3 + x = -10.246950766 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = -10.246950766 + -3 Combine like terms: 3 + -3 = 0 0 + x = -10.246950766 + -3 x = -10.246950766 + -3 Combine like terms: -10.246950766 + -3 = -13.246950766 x = -13.246950766 Simplifying x = -13.246950766

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.246950766, -13.246950766}

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