n*n-1=15

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Solution for n*n-1=15 equation: 


Simplifying
n * n + -1 = 15

Multiply n * n
n2 + -1 = 15

Reorder the terms:
-1 + n2 = 15

Solving
-1 + n2 = 15

Solving for variable 'n'.

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

Add '1' to each side of the equation.
-1 + 1 + n2 = 15 + 1

Combine like terms: -1 + 1 = 0
0 + n2 = 15 + 1
n2 = 15 + 1

Combine like terms: 15 + 1 = 16
n2 = 16

Simplifying
n2 = 16

Take the square root of each side:
n = {-4, 4}

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