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The sum of the following series (1^2 +...

The sum of the following series
`(1^2 +1) + (2^2 + 2) + (3^2 + 3) + (4^2 + 4) + …..+(n^2 + n)` is :

A

`n^3`

B

`((n^2+n)5)/3`

C

`(n(n+1)(n+2))/3`

D

can't be determined

Text Solution

Verified by Experts

The correct Answer is:
C
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