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, 13:23: PM
Here, Tn = n2 + 2n
Sum of n terms ![](https://images.topperlearning.com/topper/questions/13777_image001.gif)
![](https://images.topperlearning.com/topper/questions/13777_image001.gif)
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Answered by | 04 Jun, 2014, 15:23: PM
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