X^2+20-100=0

Solution for X^2+20-100=0 equation:

Simplifying
X2 + 20 + -100 = 0

Reorder the terms:
20 + -100 + X2 = 0

Combine like terms: 20 + -100 = -80
-80 + X2 = 0

Solving
-80 + X2 = 0

Solving for variable 'X'.

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

Add '80' to each side of the equation.
-80 + 80 + X2 = 0 + 80

Combine like terms: -80 + 80 = 0
0 + X2 = 0 + 80
X2 = 0 + 80

Combine like terms: 0 + 80 = 80
X2 = 80

Simplifying
X2 = 80

Take the square root of each side:
X = {-8.94427191, 8.94427191}