15=b^2

Solution for 15=b^2 equation:

Simplifying
15 = b2

Solving
15 = b2

Solving for variable 'b'.

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

Add '-1b2' to each side of the equation.
15 + -1b2 = b2 + -1b2

Combine like terms: b2 + -1b2 = 0
15 + -1b2 = 0

Add '-15' to each side of the equation.
15 + -15 + -1b2 = 0 + -15

Combine like terms: 15 + -15 = 0
0 + -1b2 = 0 + -15
-1b2 = 0 + -15

Combine like terms: 0 + -15 = -15
-1b2 = -15

Divide each side by '-1'.
b2 = 15

Simplifying
b2 = 15

Take the square root of each side:
b = {-3.872983346, 3.872983346}