x^2+8x+15=3

Solution for x^2+8x+15=3 equation:

Simplifying
x2 + 8x + 15 = 3

Reorder the terms:
15 + 8x + x2 = 3

Solving
15 + 8x + x2 = 3

Solving for variable 'x'.

Reorder the terms:
15 + -3 + 8x + x2 = 3 + -3

Combine like terms: 15 + -3 = 12
12 + 8x + x2 = 3 + -3

Combine like terms: 3 + -3 = 0
12 + 8x + x2 = 0

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

Subproblem 1
Set the factor '(6 + x)' equal to zero and attempt to solve:

Simplifying
6 + x = 0

Solving
6 + x = 0

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 = 0 + -6

Combine like terms: 6 + -6 = 0
0 + x = 0 + -6
x = 0 + -6

Combine like terms: 0 + -6 = -6
x = -6

Simplifying
x = -6
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 = {-6, -2}