SOLUTION: n(n-1)=110

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Question 21293: n(n-1)=110
Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
n(n-1) = 110
n%5E2+-n+=+110

Quadratic, so set equal to zero:
n%5E2+-n+-+110+=+0
+%28n-11%29%28n%2B10%29+=+0+
n= 11 or n= -10

R^2 at SCC