8x*x-128=0

Solution for 8x*x-128=0 equation:

Simplifying
8x * x + -128 = 0

Multiply x * x
8x2 + -128 = 0

Reorder the terms:
-128 + 8x2 = 0

Solving
-128 + 8x2 = 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 + 8x2 = 0 + 128

Combine like terms: -128 + 128 = 0
0 + 8x2 = 0 + 128
8x2 = 0 + 128

Combine like terms: 0 + 128 = 128
8x2 = 128

Divide each side by '8'.
x2 = 16

Simplifying
x2 = 16

Take the square root of each side:
x = {-4, 4}