648=8x^2

Solution for 648=8x^2 equation:

Simplifying
648 = 8x2

Solving
648 = 8x2

Solving for variable 'x'.

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

Add '-8x2' to each side of the equation.
648 + -8x2 = 8x2 + -8x2

Combine like terms: 8x2 + -8x2 = 0
648 + -8x2 = 0

Add '-648' to each side of the equation.
648 + -648 + -8x2 = 0 + -648

Combine like terms: 648 + -648 = 0
0 + -8x2 = 0 + -648
-8x2 = 0 + -648

Combine like terms: 0 + -648 = -648
-8x2 = -648

Divide each side by '-8'.
x2 = 81

Simplifying
x2 = 81

Take the square root of each side:
x = {-9, 9}