15x^2-240=0

Solution for 15x^2-240=0 equation:

Simplifying
15x2 + -240 = 0

Reorder the terms:
-240 + 15x2 = 0

Solving
-240 + 15x2 = 0

Solving for variable 'x'.

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

Add '240' to each side of the equation.
-240 + 240 + 15x2 = 0 + 240

Combine like terms: -240 + 240 = 0
0 + 15x2 = 0 + 240
15x2 = 0 + 240

Combine like terms: 0 + 240 = 240
15x2 = 240

Divide each side by '15'.
x2 = 16

Simplifying
x2 = 16

Take the square root of each side:
x = {-4, 4}