n^2+9=18

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Solution for n^2+9=18 equation: 


Simplifying
n2 + 9 = 18

Reorder the terms:
9 + n2 = 18

Solving
9 + n2 = 18

Solving for variable 'n'.

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

Add '-9' to each side of the equation.
9 + -9 + n2 = 18 + -9

Combine like terms: 9 + -9 = 0
0 + n2 = 18 + -9
n2 = 18 + -9

Combine like terms: 18 + -9 = 9
n2 = 9

Simplifying
n2 = 9

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

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