CBSE Class 11-science Answered
Find the sum of n terms of the series whose nth term is n2 + 2n.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
Here, Tn = n2 + 2n
Sum of n terms 
Answered by | 04 Jun, 2014, 03:23: PM
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