x^2+12x-888=0

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Solution for x^2+12x-888=0 equation:


Simplifying
x2 + 12x + -888 = 0

Reorder the terms:
-888 + 12x + x2 = 0

Solving
-888 + 12x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '888' to each side of the equation.
-888 + 12x + 888 + x2 = 0 + 888

Reorder the terms:
-888 + 888 + 12x + x2 = 0 + 888

Combine like terms: -888 + 888 = 0
0 + 12x + x2 = 0 + 888
12x + x2 = 0 + 888

Combine like terms: 0 + 888 = 888
12x + x2 = 888

The x term is 12x.  Take half its coefficient (6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
12x + 36 + x2 = 888 + 36

Reorder the terms:
36 + 12x + x2 = 888 + 36

Combine like terms: 888 + 36 = 924
36 + 12x + x2 = 924

Factor a perfect square on the left side:
(x + 6)(x + 6) = 924

Calculate the square root of the right side: 30.397368307

Break this problem into two subproblems by setting 
(x + 6) equal to 30.397368307 and -30.397368307.

Subproblem 1

x + 6 = 30.397368307 Simplifying x + 6 = 30.397368307 Reorder the terms: 6 + x = 30.397368307 Solving 6 + x = 30.397368307 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = 30.397368307 + -6 Combine like terms: 6 + -6 = 0 0 + x = 30.397368307 + -6 x = 30.397368307 + -6 Combine like terms: 30.397368307 + -6 = 24.397368307 x = 24.397368307 Simplifying x = 24.397368307

Subproblem 2

x + 6 = -30.397368307 Simplifying x + 6 = -30.397368307 Reorder the terms: 6 + x = -30.397368307 Solving 6 + x = -30.397368307 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = -30.397368307 + -6 Combine like terms: 6 + -6 = 0 0 + x = -30.397368307 + -6 x = -30.397368307 + -6 Combine like terms: -30.397368307 + -6 = -36.397368307 x = -36.397368307 Simplifying x = -36.397368307

Solution

The solution to the problem is based on the solutions from the subproblems. x = {24.397368307, -36.397368307}

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