2x^2-56=72

Solution for 2x^2-56=72 equation:

Simplifying
2x2 + -56 = 72

Reorder the terms:
-56 + 2x2 = 72

Solving
-56 + 2x2 = 72

Solving for variable 'x'.

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

Add '56' to each side of the equation.
-56 + 56 + 2x2 = 72 + 56

Combine like terms: -56 + 56 = 0
0 + 2x2 = 72 + 56
2x2 = 72 + 56

Combine like terms: 72 + 56 = 128
2x2 = 128

Divide each side by '2'.
x2 = 64

Simplifying
x2 = 64

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