s^2-18=0

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Solution for s^2-18=0 equation: 


Simplifying
s2 + -18 = 0

Reorder the terms:
-18 + s2 = 0

Solving
-18 + s2 = 0

Solving for variable 's'.

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

Add '18' to each side of the equation.
-18 + 18 + s2 = 0 + 18

Combine like terms: -18 + 18 = 0
0 + s2 = 0 + 18
s2 = 0 + 18

Combine like terms: 0 + 18 = 18
s2 = 18

Simplifying
s2 = 18

Take the square root of each side:
s = {-4.242640687, 4.242640687}

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