9-y^2=8

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Solution for 9-y^2=8 equation: 


Simplifying
9 + -1y2 = 8

Solving
9 + -1y2 = 8

Solving for variable 'y'.

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

Add '-9' to each side of the equation.
9 + -9 + -1y2 = 8 + -9

Combine like terms: 9 + -9 = 0
0 + -1y2 = 8 + -9
-1y2 = 8 + -9

Combine like terms: 8 + -9 = -1
-1y2 = -1

Divide each side by '-1'.
y2 = 1

Simplifying
y2 = 1

Take the square root of each side:
y = {-1, 1}

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