2x^2-4-124=0

Solution for 2x^2-4-124=0 equation:

Simplifying
2x2 + -4 + -124 = 0

Reorder the terms:
-4 + -124 + 2x2 = 0

Combine like terms: -4 + -124 = -128
-128 + 2x2 = 0

Solving
-128 + 2x2 = 0

Solving for variable 'x'.

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

Add '128' to each side of the equation.
-128 + 128 + 2x2 = 0 + 128

Combine like terms: -128 + 128 = 0
0 + 2x2 = 0 + 128
2x2 = 0 + 128

Combine like terms: 0 + 128 = 128
2x2 = 128

Divide each side by '2'.
x2 = 64

Simplifying
x2 = 64

Take the square root of each side:
x = {-8, 8}