20=x^2

Solution for 20=x^2 equation:

Simplifying
20 = x2

Solving
20 = x2

Solving for variable 'x'.

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

Add '-1x2' to each side of the equation.
20 + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
20 + -1x2 = 0

Add '-20' to each side of the equation.
20 + -20 + -1x2 = 0 + -20

Combine like terms: 20 + -20 = 0
0 + -1x2 = 0 + -20
-1x2 = 0 + -20

Combine like terms: 0 + -20 = -20
-1x2 = -20

Divide each side by '-1'.
x2 = 20

Simplifying
x2 = 20

Take the square root of each side:
x = {-4.472135955, 4.472135955}