y^2-255=0

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Solution for y^2-255=0 equation: 


Simplifying
y2 + -255 = 0

Reorder the terms:
-255 + y2 = 0

Solving
-255 + y2 = 0

Solving for variable 'y'.

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

Add '255' to each side of the equation.
-255 + 255 + y2 = 0 + 255

Combine like terms: -255 + 255 = 0
0 + y2 = 0 + 255
y2 = 0 + 255

Combine like terms: 0 + 255 = 255
y2 = 255

Simplifying
y2 = 255

Take the square root of each side:
y = {-15.968719423, 15.968719423}

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