SOLUTION: leave a non-perfect square under the radical sign: 3n^2-2n^2+8=89. how do I solve something like this?

SOLUTION: leave a non-perfect square under the radical sign: 3n^2-2n^2+8=89. how do I solve something like this?

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Question 550647: leave a non-perfect square under the radical sign: 3n^2-2n^2+8=89. how do I solve something like this?
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
3n^2-2n^2+8=89

3n^2-2n^2=89-8

n^2=81

n=+-sqrt(81)

n=9 or n=-9
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