SOLUTION: what is the sigma notation of (-1,2,7,14,23...)

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Question 616124: what is the sigma notation of (-1,2,7,14,23...)
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi, 

sigma notation of (-1,2,7,14,23...)

sum%28n%5E2-2%2C+n=1%2C+infinity+%29