2x^2-800=0

Solution for 2x^2-800=0 equation:

Simplifying
2x2 + -800 = 0

Reorder the terms:
-800 + 2x2 = 0

Solving
-800 + 2x2 = 0

Solving for variable 'x'.

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

Add '800' to each side of the equation.
-800 + 800 + 2x2 = 0 + 800

Combine like terms: -800 + 800 = 0
0 + 2x2 = 0 + 800
2x2 = 0 + 800

Combine like terms: 0 + 800 = 800
2x2 = 800

Divide each side by '2'.
x2 = 400

Simplifying
x2 = 400

Take the square root of each side:
x = {-20, 20}