8x^2-392=0

Solution for 8x^2-392=0 equation:

Simplifying
8x2 + -392 = 0

Reorder the terms:
-392 + 8x2 = 0

Solving
-392 + 8x2 = 0

Solving for variable 'x'.

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

Add '392' to each side of the equation.
-392 + 392 + 8x2 = 0 + 392

Combine like terms: -392 + 392 = 0
0 + 8x2 = 0 + 392
8x2 = 0 + 392

Combine like terms: 0 + 392 = 392
8x2 = 392

Divide each side by '8'.
x2 = 49

Simplifying
x2 = 49

Take the square root of each side:
x = {-7, 7}