y*y-64=0

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Solution for y*y-64=0 equation: 


Simplifying
y * y + -64 = 0

Multiply y * y
y2 + -64 = 0

Reorder the terms:
-64 + y2 = 0

Solving
-64 + y2 = 0

Solving for variable 'y'.

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

Add '64' to each side of the equation.
-64 + 64 + y2 = 0 + 64

Combine like terms: -64 + 64 = 0
0 + y2 = 0 + 64
y2 = 0 + 64

Combine like terms: 0 + 64 = 64
y2 = 64

Simplifying
y2 = 64

Take the square root of each side:
y = {-8, 8}

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