15=4x^2

Solution for 15=4x^2 equation:

Simplifying
15 = 4x2

Solving
15 = 4x2

Solving for variable 'x'.

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

Add '-4x2' to each side of the equation.
15 + -4x2 = 4x2 + -4x2

Combine like terms: 4x2 + -4x2 = 0
15 + -4x2 = 0

Add '-15' to each side of the equation.
15 + -15 + -4x2 = 0 + -15

Combine like terms: 15 + -15 = 0
0 + -4x2 = 0 + -15
-4x2 = 0 + -15

Combine like terms: 0 + -15 = -15
-4x2 = -15

Divide each side by '-4'.
x2 = 3.75

Simplifying
x2 = 3.75

Take the square root of each side:
x = {-1.936491673, 1.936491673}