(x^2-420)=

Solution for (x^2-420)= equation:

Simplifying
(x2 + -420) = 0

Reorder the terms:
(-420 + x2) = 0

Remove parenthesis around (-420 + x2)
-420 + x2 = 0

Solving
-420 + x2 = 0

Solving for variable 'x'.

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

Add '420' to each side of the equation.
-420 + 420 + x2 = 0 + 420

Combine like terms: -420 + 420 = 0
0 + x2 = 0 + 420
x2 = 0 + 420

Combine like terms: 0 + 420 = 420
x2 = 420

Simplifying
x2 = 420

Take the square root of each side:
x = {-20.493901532, 20.493901532}