SOLUTION: 3n^2+10=85

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Question 641633: 3n^2+10=85
Answer by jim_thompson5910(35256) About Me  (Show Source):
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3n^2+10=85

3n^2+10-10=85-10

3n^2=75

n^2=75/3

n^2=25

n^2-25 = 0

n^2-5^2 = 0

(n-5)(n+5) = 0

n-5 = 0 or n+5 = 0

n = 5 or n = -5

So the solutions are n = 5 or n = -5