X^2+13-20=0

Solution for X^2+13-20=0 equation:

Simplifying
X2 + 13 + -20 = 0

Reorder the terms:
13 + -20 + X2 = 0

Combine like terms: 13 + -20 = -7
-7 + X2 = 0

Solving
-7 + X2 = 0

Solving for variable 'X'.

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

Add '7' to each side of the equation.
-7 + 7 + X2 = 0 + 7

Combine like terms: -7 + 7 = 0
0 + X2 = 0 + 7
X2 = 0 + 7

Combine like terms: 0 + 7 = 7
X2 = 7

Simplifying
X2 = 7

Take the square root of each side:
X = {-2.645751311, 2.645751311}