y^2-87=

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Solution for y^2-87= equation: 


Simplifying
y2 + -87 = 0

Reorder the terms:
-87 + y2 = 0

Solving
-87 + y2 = 0

Solving for variable 'y'.

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

Add '87' to each side of the equation.
-87 + 87 + y2 = 0 + 87

Combine like terms: -87 + 87 = 0
0 + y2 = 0 + 87
y2 = 0 + 87

Combine like terms: 0 + 87 = 87
y2 = 87

Simplifying
y2 = 87

Take the square root of each side:
y = {-9.327379053, 9.327379053}

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