Question Number 33356 by caravan msup abdo. last updated on 15/Apr/18
$${find}\:{the}\:{radius}\:{of}\:\sum_{{n}\geqslant\mathrm{0}} \frac{{n}^{\mathrm{2}} \:+{n}}{\mathrm{2}^{{n}} \:+{n}!}\:{x}^{{n}} \\ $$
find-the-radius-of-n-0-n-2-n-2-n-n-x-n-