2x^2-646=0

Solution for 2x^2-646=0 equation:

Simplifying
2x2 + -646 = 0

Reorder the terms:
-646 + 2x2 = 0

Solving
-646 + 2x2 = 0

Solving for variable 'x'.

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

Add '646' to each side of the equation.
-646 + 646 + 2x2 = 0 + 646

Combine like terms: -646 + 646 = 0
0 + 2x2 = 0 + 646
2x2 = 0 + 646

Combine like terms: 0 + 646 = 646
2x2 = 646

Divide each side by '2'.
x2 = 323

Simplifying
x2 = 323

Take the square root of each side:
x = {-17.972200756, 17.972200756}