(x*x)-18=-2

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Solution for (x*x)-18=-2 equation: 


Simplifying
(x * x) + -18 = -2

Multiply x * x
(x2) + -18 = -2
x2 + -18 = -2

Reorder the terms:
-18 + x2 = -2

Solving
-18 + x2 = -2

Solving for variable 'x'.

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

Add '18' to each side of the equation.
-18 + 18 + x2 = -2 + 18

Combine like terms: -18 + 18 = 0
0 + x2 = -2 + 18
x2 = -2 + 18

Combine like terms: -2 + 18 = 16
x2 = 16

Simplifying
x2 = 16

Take the square root of each side:
x = {-4, 4}

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