15=5x^2

Solution for 15=5x^2 equation:

Simplifying
15 = 5x2

Solving
15 = 5x2

Solving for variable 'x'.

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

Add '-5x2' to each side of the equation.
15 + -5x2 = 5x2 + -5x2

Combine like terms: 5x2 + -5x2 = 0
15 + -5x2 = 0

Add '-15' to each side of the equation.
15 + -15 + -5x2 = 0 + -15

Combine like terms: 15 + -15 = 0
0 + -5x2 = 0 + -15
-5x2 = 0 + -15

Combine like terms: 0 + -15 = -15
-5x2 = -15

Divide each side by '-5'.
x2 = 3

Simplifying
x2 = 3

Take the square root of each side:
x = {-1.732050808, 1.732050808}