X^2-6-9=0

Solution for X^2-6-9=0 equation:

Simplifying
X2 + -6 + -9 = 0

Reorder the terms:
-6 + -9 + X2 = 0

Combine like terms: -6 + -9 = -15
-15 + X2 = 0

Solving
-15 + X2 = 0

Solving for variable 'X'.

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

Add '15' to each side of the equation.
-15 + 15 + X2 = 0 + 15

Combine like terms: -15 + 15 = 0
0 + X2 = 0 + 15
X2 = 0 + 15

Combine like terms: 0 + 15 = 15
X2 = 15

Simplifying
X2 = 15

Take the square root of each side:
X = {-3.872983346, 3.872983346}