x^2-3-6=0

Solution for x^2-3-6=0 equation:

Simplifying
x2 + -3 + -6 = 0

Reorder the terms:
-3 + -6 + x2 = 0

Combine like terms: -3 + -6 = -9
-9 + x2 = 0

Solving
-9 + x2 = 0

Solving for variable 'x'.

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

Add '9' to each side of the equation.
-9 + 9 + x2 = 0 + 9

Combine like terms: -9 + 9 = 0
0 + x2 = 0 + 9
x2 = 0 + 9

Combine like terms: 0 + 9 = 9
x2 = 9

Simplifying
x2 = 9

Take the square root of each side:
x = {-3, 3}