225=b^2

Solution for 225=b^2 equation:

Simplifying
225 = b2

Solving
225 = 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.
225 + -1b2 = b2 + -1b2

Combine like terms: b2 + -1b2 = 0
225 + -1b2 = 0

Add '-225' to each side of the equation.
225 + -225 + -1b2 = 0 + -225

Combine like terms: 225 + -225 = 0
0 + -1b2 = 0 + -225
-1b2 = 0 + -225

Combine like terms: 0 + -225 = -225
-1b2 = -225

Divide each side by '-1'.
b2 = 225

Simplifying
b2 = 225

Take the square root of each side:
b = {-15, 15}