18=m^2+3m

Solution for 18=m^2+3m equation:

Simplifying
18 = m2 + 3m

Reorder the terms:
18 = 3m + m2

Solving
18 = 3m + m2

Solving for variable 'm'.

Reorder the terms:
18 + -3m + -1m2 = 3m + -3m + m2 + -1m2

Combine like terms: 3m + -3m = 0
18 + -3m + -1m2 = 0 + m2 + -1m2
18 + -3m + -1m2 = m2 + -1m2

Combine like terms: m2 + -1m2 = 0
18 + -3m + -1m2 = 0

Factor a trinomial.
(3 + -1m)(6 + m) = 0

Subproblem 1
Set the factor '(3 + -1m)' equal to zero and attempt to solve:

Simplifying
3 + -1m = 0

Solving
3 + -1m = 0

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

Add '-3' to each side of the equation.
3 + -3 + -1m = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -1m = 0 + -3
-1m = 0 + -3

Combine like terms: 0 + -3 = -3
-1m = -3

Divide each side by '-1'.
m = 3

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

Simplifying
6 + m = 0

Solving
6 + m = 0

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

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

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

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

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