0=n^2-9

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Solution for 0=n^2-9 equation: 


Simplifying
0 = n2 + -9

Reorder the terms:
0 = -9 + n2

Solving
0 = -9 + n2

Solving for variable 'n'.

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

Add '-1n2' to each side of the equation.
0 + -1n2 = -9 + n2 + -1n2
Remove the zero:
-1n2 = -9 + n2 + -1n2

Combine like terms: n2 + -1n2 = 0
-1n2 = -9 + 0
-1n2 = -9

Divide each side by '-1'.
n2 = 9

Simplifying
n2 = 9

Take the square root of each side:
n = {-3, 3}

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