-9q^2+225=0

Solution for -9q^2+225=0 equation:

Simplifying
-9q2 + 225 = 0

Reorder the terms:
225 + -9q2 = 0

Solving
225 + -9q2 = 0

Solving for variable 'q'.

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

Add '-225' to each side of the equation.
225 + -225 + -9q2 = 0 + -225

Combine like terms: 225 + -225 = 0
0 + -9q2 = 0 + -225
-9q2 = 0 + -225

Combine like terms: 0 + -225 = -225
-9q2 = -225

Divide each side by '-9'.
q2 = 25

Simplifying
q2 = 25

Take the square root of each side:
q = {-5, 5}