-4+y^2=8

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Solution for -4+y^2=8 equation: 


Simplifying
-4 + y2 = 8

Solving
-4 + y2 = 8

Solving for variable 'y'.

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

Add '4' to each side of the equation.
-4 + 4 + y2 = 8 + 4

Combine like terms: -4 + 4 = 0
0 + y2 = 8 + 4
y2 = 8 + 4

Combine like terms: 8 + 4 = 12
y2 = 12

Simplifying
y2 = 12

Take the square root of each side:
y = {-3.464101615, 3.464101615}

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