-2y^2+18=0

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Solution for -2y^2+18=0 equation: 


Simplifying
-2y2 + 18 = 0

Reorder the terms:
18 + -2y2 = 0

Solving
18 + -2y2 = 0

Solving for variable 'y'.

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

Add '-18' to each side of the equation.
18 + -18 + -2y2 = 0 + -18

Combine like terms: 18 + -18 = 0
0 + -2y2 = 0 + -18
-2y2 = 0 + -18

Combine like terms: 0 + -18 = -18
-2y2 = -18

Divide each side by '-2'.
y2 = 9

Simplifying
y2 = 9

Take the square root of each side:
y = {-3, 3}

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