-2x^2+128=0

Solution for -2x^2+128=0 equation:

Simplifying
-2x2 + 128 = 0

Reorder the terms:
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}