2+y*y=18

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Solution for 2+y*y=18 equation: 


Simplifying
2 + y * y = 18

Multiply y * y
2 + y2 = 18

Solving
2 + y2 = 18

Solving for variable 'y'.

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

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

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

Combine like terms: 18 + -2 = 16
y2 = 16

Simplifying
y2 = 16

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

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