x^2+12x+39=7

Solution for x^2+12x+39=7 equation:

Simplifying
x2 + 12x + 39 = 7

Reorder the terms:
39 + 12x + x2 = 7

Solving
39 + 12x + x2 = 7

Solving for variable 'x'.

Reorder the terms:
39 + -7 + 12x + x2 = 7 + -7

Combine like terms: 39 + -7 = 32
32 + 12x + x2 = 7 + -7

Combine like terms: 7 + -7 = 0
32 + 12x + x2 = 0

Factor a trinomial.
(8 + x)(4 + x) = 0

Subproblem 1
Set the factor '(8 + x)' equal to zero and attempt to solve:

Simplifying
8 + x = 0

Solving
8 + x = 0

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

Add '-8' to each side of the equation.
8 + -8 + x = 0 + -8

Combine like terms: 8 + -8 = 0
0 + x = 0 + -8
x = 0 + -8

Combine like terms: 0 + -8 = -8
x = -8

Simplifying
x = -8
Subproblem 2
Set the factor '(4 + x)' equal to zero and attempt to solve:

Simplifying
4 + x = 0

Solving
4 + x = 0

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

Add '-4' to each side of the equation.
4 + -4 + x = 0 + -4

Combine like terms: 4 + -4 = 0
0 + x = 0 + -4
x = 0 + -4

Combine like terms: 0 + -4 = -4
x = -4

Simplifying
x = -4
Solution
x = {-8, -4}