v^2=-9v-18

Solution for v^2=-9v-18 equation:

Simplifying
v2 = -9v + -18

Reorder the terms:
v2 = -18 + -9v

Solving
v2 = -18 + -9v

Solving for variable 'v'.

Reorder the terms:
18 + 9v + v2 = -18 + -9v + 18 + 9v

Reorder the terms:
18 + 9v + v2 = -18 + 18 + -9v + 9v

Combine like terms: -18 + 18 = 0
18 + 9v + v2 = 0 + -9v + 9v
18 + 9v + v2 = -9v + 9v

Combine like terms: -9v + 9v = 0
18 + 9v + v2 = 0

Factor a trinomial.
(6 + v)(3 + v) = 0

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

Simplifying
6 + v = 0

Solving
6 + v = 0

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

Add '-6' to each side of the equation.
6 + -6 + v = 0 + -6

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

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

Simplifying
v = -6
Subproblem 2
Set the factor '(3 + v)' equal to zero and attempt to solve:

Simplifying
3 + v = 0

Solving
3 + v = 0

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

Add '-3' to each side of the equation.
3 + -3 + v = 0 + -3

Combine like terms: 3 + -3 = 0
0 + v = 0 + -3
v = 0 + -3

Combine like terms: 0 + -3 = -3
v = -3

Simplifying
v = -3
Solution
v = {-6, -3}