x(x+12)=-20

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Solution for x(x+12)=-20 equation: 


Simplifying
x(x + 12) = -20

Reorder the terms:
x(12 + x) = -20
(12 * x + x * x) = -20
(12x + x2) = -20

Solving
12x + x2 = -20

Solving for variable 'x'.

Reorder the terms:
20 + 12x + x2 = -20 + 20

Combine like terms: -20 + 20 = 0
20 + 12x + x2 = 0

Factor a trinomial.
(10 + x)(2 + x) = 0


Subproblem 1
Set the factor '(10 + x)' equal to zero and attempt to solve:

Simplifying
10 + x = 0

Solving
10 + x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-10' to each side of the equation.
10 + -10 + x = 0 + -10

Combine like terms: 10 + -10 = 0
0 + x = 0 + -10
x = 0 + -10

Combine like terms: 0 + -10 = -10
x = -10

Simplifying
x = -10

Subproblem 2
Set the factor '(2 + x)' equal to zero and attempt to solve:

Simplifying
2 + x = 0

Solving
2 + x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-2' to each side of the equation.
2 + -2 + x = 0 + -2

Combine like terms: 2 + -2 = 0
0 + x = 0 + -2
x = 0 + -2

Combine like terms: 0 + -2 = -2
x = -2

Simplifying
x = -2
Solution
x = {-10, -2}

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