-8+9n^2=28

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Solution for -8+9n^2=28 equation: 


Simplifying
-8 + 9n2 = 28

Solving
-8 + 9n2 = 28

Solving for variable 'n'.

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

Add '8' to each side of the equation.
-8 + 8 + 9n2 = 28 + 8

Combine like terms: -8 + 8 = 0
0 + 9n2 = 28 + 8
9n2 = 28 + 8

Combine like terms: 28 + 8 = 36
9n2 = 36

Divide each side by '9'.
n2 = 4

Simplifying
n2 = 4

Take the square root of each side:
n = {-2, 2}

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