2r^2+16=-12r

Solution for 2r^2+16=-12r equation:

Simplifying
2r2 + 16 = -12r

Reorder the terms:
16 + 2r2 = -12r

Solving
16 + 2r2 = -12r

Solving for variable 'r'.

Reorder the terms:
16 + 12r + 2r2 = -12r + 12r

Combine like terms: -12r + 12r = 0
16 + 12r + 2r2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(8 + 6r + r2) = 0

Factor a trinomial.
2((4 + r)(2 + r)) = 0

Ignore the factor 2.
Subproblem 1
Set the factor '(4 + r)' equal to zero and attempt to solve:

Simplifying
4 + r = 0

Solving
4 + r = 0

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

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

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

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

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

Simplifying
2 + r = 0

Solving
2 + r = 0

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

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

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

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

Simplifying
r = -2
Solution
r = {-4, -2}