225-36x^2=

Solution for 225-36x^2= equation:

Simplifying
225 + -36x2 = 0

Solving
225 + -36x2 = 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 + -36x2 = 0 + -225

Combine like terms: 225 + -225 = 0
0 + -36x2 = 0 + -225
-36x2 = 0 + -225

Combine like terms: 0 + -225 = -225
-36x2 = -225

Divide each side by '-36'.
x2 = 6.25

Simplifying
x2 = 6.25

Take the square root of each side:
x = {-2.5, 2.5}