x^2-20-2=0

Solution for x^2-20-2=0 equation:

Simplifying
x2 + -20 + -2 = 0

Reorder the terms:
-20 + -2 + x2 = 0

Combine like terms: -20 + -2 = -22
-22 + x2 = 0

Solving
-22 + x2 = 0

Solving for variable 'x'.

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

Add '22' to each side of the equation.
-22 + 22 + x2 = 0 + 22

Combine like terms: -22 + 22 = 0
0 + x2 = 0 + 22
x2 = 0 + 22

Combine like terms: 0 + 22 = 22
x2 = 22

Simplifying
x2 = 22

Take the square root of each side:
x = {-4.69041576, 4.69041576}