ChallengeMediumTelescoping & Recursion ShareTelescoping & Recursion · Medium problemEvaluate ∑n=1∞2n+1n2(n+1)2\displaystyle\sum_{n=1}^{\infty}\dfrac{2n+1}{n^{2}(n+1)^{2}}n=1∑∞n2(n+1)22n+1.Check Show answer Walk through it step by step Practice more like this Review this concept