X^2+12-4=9

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Solution for X^2+12-4=9 equation: 


Simplifying
X2 + 12 + -4 = 9

Reorder the terms:
12 + -4 + X2 = 9

Combine like terms: 12 + -4 = 8
8 + X2 = 9

Solving
8 + X2 = 9

Solving for variable 'X'.

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

Add '-8' to each side of the equation.
8 + -8 + X2 = 9 + -8

Combine like terms: 8 + -8 = 0
0 + X2 = 9 + -8
X2 = 9 + -8

Combine like terms: 9 + -8 = 1
X2 = 1

Simplifying
X2 = 1

Take the square root of each side:
X = {-1, 1}

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