Question Number 151652 by ArielVyny last updated on 22/Aug/21
$${faire}\:{la}\:{division}\:{de}\:\left(\mathrm{1}−{x}^{{n}} \right)\:{par}\:\left(\mathrm{1}−{x}\right) \\ $$
Answered by puissant last updated on 22/Aug/21
$$=\mathrm{1}+{x}+{x}^{\mathrm{2}} +....+{x}^{{n}−\mathrm{1}} \\ $$
Commented by ArielVyny last updated on 22/Aug/21
$${yes}\:{thank} \\ $$