9x^2-225=

Solution for 9x^2-225= equation:

Simplifying
9x2 + -225 = 0

Reorder the terms:
-225 + 9x2 = 0

Solving
-225 + 9x2 = 0

Solving for variable 'x'.

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

Add '225' to each side of the equation.
-225 + 225 + 9x2 = 0 + 225

Combine like terms: -225 + 225 = 0
0 + 9x2 = 0 + 225
9x2 = 0 + 225

Combine like terms: 0 + 225 = 225
9x2 = 225

Divide each side by '9'.
x2 = 25

Simplifying
x2 = 25

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