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Question Number 33299 by abdo imad last updated on 14/Apr/18
$${find}\:{the}\:{sum}\:{of}\:\:\sum_{{n}=\mathrm{0}} ^{\infty} \:\frac{{n}^{\mathrm{2}} \:+\mathrm{1}}{{n}+\mathrm{1}}\:{x}^{{n}\:} \\ $$