Question Number 28165 by abdo imad last updated on 21/Jan/18
$${let}\:{give}\:{w}=\:{e}^{{i}\frac{\mathrm{2}\pi}{{n}}} \:\:\:{calculate}\:\:\sum_{{k}=\mathrm{0}} ^{{n}−\mathrm{1}} \left(\mathrm{1}+{w}^{{k}} \right)^{{n}} \:. \\ $$
let-give-w-e-i-2pi-n-calculate-k-0-n-1-1-w-k-n-