180=x^2+12x

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Solution for 180=x^2+12x equation:


Simplifying
180 = x2 + 12x

Reorder the terms:
180 = 12x + x2

Solving
180 = 12x + x2

Solving for variable 'x'.

Reorder the terms:
180 + -12x + -1x2 = 12x + -12x + x2 + -1x2

Combine like terms: 12x + -12x = 0
180 + -12x + -1x2 = 0 + x2 + -1x2
180 + -12x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
180 + -12x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-180 + 12x + x2 = 0

Move the constant term to the right:

Add '180' to each side of the equation.
-180 + 12x + 180 + x2 = 0 + 180

Reorder the terms:
-180 + 180 + 12x + x2 = 0 + 180

Combine like terms: -180 + 180 = 0
0 + 12x + x2 = 0 + 180
12x + x2 = 0 + 180

Combine like terms: 0 + 180 = 180
12x + x2 = 180

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 = 180 + 36

Reorder the terms:
36 + 12x + x2 = 180 + 36

Combine like terms: 180 + 36 = 216
36 + 12x + x2 = 216

Factor a perfect square on the left side:
(x + 6)(x + 6) = 216

Calculate the square root of the right side: 14.696938457

Break this problem into two subproblems by setting 
(x + 6) equal to 14.696938457 and -14.696938457.

Subproblem 1

x + 6 = 14.696938457 Simplifying x + 6 = 14.696938457 Reorder the terms: 6 + x = 14.696938457 Solving 6 + x = 14.696938457 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 = 14.696938457 + -6 Combine like terms: 6 + -6 = 0 0 + x = 14.696938457 + -6 x = 14.696938457 + -6 Combine like terms: 14.696938457 + -6 = 8.696938457 x = 8.696938457 Simplifying x = 8.696938457

Subproblem 2

x + 6 = -14.696938457 Simplifying x + 6 = -14.696938457 Reorder the terms: 6 + x = -14.696938457 Solving 6 + x = -14.696938457 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 = -14.696938457 + -6 Combine like terms: 6 + -6 = 0 0 + x = -14.696938457 + -6 x = -14.696938457 + -6 Combine like terms: -14.696938457 + -6 = -20.696938457 x = -20.696938457 Simplifying x = -20.696938457

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.696938457, -20.696938457}

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