Find the sum to n term of the series whose ` n^(th)` term is given by ` n(n^(2) + 1)`

Explanation

To find the sum to n terms of the series whose nth term is given by \( n(n^2 + 1) \), we can follow these steps:

### Step 1: Define the nth term
The nth term of the series is given by:
\[ a_n = n(n^2 + 1) = n^3 + n \]

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