# How to calculate this limit？ [closed]

Here is my question:

$\displaystyle\lim_{n\rightarrow \infty}n^2[(1+\frac{1}{1+n})^{n+1}-(1+\frac{1}{n})^{n}]=?$

Any hints will be fine. Thank you!

As simple as using Limit:
Clear[n];