13=3+2m^2

Solution for 13=3+2m^2 equation:

Simplifying
13 = 3 + 2m2

Solving
13 = 3 + 2m2

Solving for variable 'm'.

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

Add '-2m2' to each side of the equation.
13 + -2m2 = 3 + 2m2 + -2m2

Combine like terms: 2m2 + -2m2 = 0
13 + -2m2 = 3 + 0
13 + -2m2 = 3

Add '-13' to each side of the equation.
13 + -13 + -2m2 = 3 + -13

Combine like terms: 13 + -13 = 0
0 + -2m2 = 3 + -13
-2m2 = 3 + -13

Combine like terms: 3 + -13 = -10
-2m2 = -10

Divide each side by '-2'.
m2 = 5

Simplifying
m2 = 5

Take the square root of each side:
m = {-2.236067978, 2.236067978}