11.2.43 ∑2/(n^2-1) Determine whether the series is convergent by expressing sn as a telescoping sum

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Problem 11.2.43 From James Stewart's Single Variable Calculus - Early Transcendentals 7th edition from chapter 11, Inifinite Sequences and Series - Series
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Determine whether the series is convergent or divergent by expressing sn as a telescoping sum (as in Example 7). If it is convergent, find its sum.
∑2/(n^2-1)
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