x^2+12x+20=9

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Solution for x^2+12x+20=9 equation:


Simplifying
x2 + 12x + 20 = 9

Reorder the terms:
20 + 12x + x2 = 9

Solving
20 + 12x + x2 = 9

Solving for variable 'x'.

Reorder the terms:
20 + -9 + 12x + x2 = 9 + -9

Combine like terms: 20 + -9 = 11
11 + 12x + x2 = 9 + -9

Combine like terms: 9 + -9 = 0
11 + 12x + x2 = 0

Factor a trinomial.
(11 + x)(1 + x) = 0

Subproblem 1

Set the factor '(11 + x)' equal to zero and attempt to solve: Simplifying 11 + x = 0 Solving 11 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-11' to each side of the equation. 11 + -11 + x = 0 + -11 Combine like terms: 11 + -11 = 0 0 + x = 0 + -11 x = 0 + -11 Combine like terms: 0 + -11 = -11 x = -11 Simplifying x = -11

Subproblem 2

Set the factor '(1 + x)' equal to zero and attempt to solve: Simplifying 1 + x = 0 Solving 1 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + x = 0 + -1 x = 0 + -1 Combine like terms: 0 + -1 = -1 x = -1 Simplifying x = -1

Solution

x = {-11, -1}

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