X^2-10-20=0

Solution for X^2-10-20=0 equation:

Simplifying
X2 + -10 + -20 = 0

Reorder the terms:
-10 + -20 + X2 = 0

Combine like terms: -10 + -20 = -30
-30 + X2 = 0

Solving
-30 + X2 = 0

Solving for variable 'X'.

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

Add '30' to each side of the equation.
-30 + 30 + X2 = 0 + 30

Combine like terms: -30 + 30 = 0
0 + X2 = 0 + 30
X2 = 0 + 30

Combine like terms: 0 + 30 = 30
X2 = 30

Simplifying
X2 = 30

Take the square root of each side:
X = {-5.477225575, 5.477225575}