X^2-4=18

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Solution for X^2-4=18 equation: 


Simplifying
X2 + -4 = 18

Reorder the terms:
-4 + X2 = 18

Solving
-4 + X2 = 18

Solving for variable 'X'.

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

Add '4' to each side of the equation.
-4 + 4 + X2 = 18 + 4

Combine like terms: -4 + 4 = 0
0 + X2 = 18 + 4
X2 = 18 + 4

Combine like terms: 18 + 4 = 22
X2 = 22

Simplifying
X2 = 22

Take the square root of each side:
X = {-4.69041576, 4.69041576}

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