12+6m^2-21=

Solution for 12+6m^2-21= equation:

Simplifying
12 + 6m2 + -21 = 0

Reorder the terms:
12 + -21 + 6m2 = 0

Combine like terms: 12 + -21 = -9
-9 + 6m2 = 0

Solving
-9 + 6m2 = 0

Solving for variable 'm'.

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

Add '9' to each side of the equation.
-9 + 9 + 6m2 = 0 + 9

Combine like terms: -9 + 9 = 0
0 + 6m2 = 0 + 9
6m2 = 0 + 9

Combine like terms: 0 + 9 = 9
6m2 = 9

Divide each side by '6'.
m2 = 1.5

Simplifying
m2 = 1.5

Take the square root of each side:
m = {-1.224744871, 1.224744871}