4x^2-4-15=0

Solution for 4x^2-4-15=0 equation:

Simplifying
4x2 + -4 + -15 = 0

Reorder the terms:
-4 + -15 + 4x2 = 0

Combine like terms: -4 + -15 = -19
-19 + 4x2 = 0

Solving
-19 + 4x2 = 0

Solving for variable 'x'.

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

Add '19' to each side of the equation.
-19 + 19 + 4x2 = 0 + 19

Combine like terms: -19 + 19 = 0
0 + 4x2 = 0 + 19
4x2 = 0 + 19

Combine like terms: 0 + 19 = 19
4x2 = 19

Divide each side by '4'.
x2 = 4.75

Simplifying
x2 = 4.75

Take the square root of each side:
x = {-2.179449472, 2.179449472}