#1055 · Algebra · Sequences & series

Quadratic Series Summation

Find the sum of $n$ terms of the series whose $n^{e x t t h}$ term is $n (n + 2)$ .

~6 minAnswer checked instantlysummationpower sums

H. S. Hall & S. R. Knight, Higher Algebra (1891) · Ch. VI. Harmonical Progression, Examples VI.a, No. 12

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Checked against the answer in H. S. Hall & S. R. Knight, Higher Algebra (1891).