X^2-1-2=0

Solution for X^2-1-2=0 equation:

Simplifying
X2 + -1 + -2 = 0

Reorder the terms:
-1 + -2 + X2 = 0

Combine like terms: -1 + -2 = -3
-3 + X2 = 0

Solving
-3 + X2 = 0

Solving for variable 'X'.

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

Add '3' to each side of the equation.
-3 + 3 + X2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + X2 = 0 + 3
X2 = 0 + 3

Combine like terms: 0 + 3 = 3
X2 = 3

Simplifying
X2 = 3

Take the square root of each side:
X = {-1.732050808, 1.732050808}