X^2+3-12=6

Solution for X^2+3-12=6 equation:

Simplifying
X2 + 3 + -12 = 6

Reorder the terms:
3 + -12 + X2 = 6

Combine like terms: 3 + -12 = -9
-9 + X2 = 6

Solving
-9 + X2 = 6

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 = 6 + 9

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

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

Simplifying
X2 = 15

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