Question Number 40664 by Tawa1 last updated on 25/Jul/18
$$\mathrm{Factorise}:\:\:\:\:\:\mathrm{x}^{\mathrm{19}} \:−\:\mathrm{x}^{\mathrm{17}} \:+\:\mathrm{x}^{\mathrm{10}} \:+\:\mathrm{x}^{\mathrm{8}} \:+\:\mathrm{1} \\ $$
Answered by ajfour last updated on 26/Jul/18
$$\:=\:\left({x}^{\mathrm{10}} −{x}^{\mathrm{9}} +\mathrm{1}\right)\left({x}^{\mathrm{9}} +{x}^{\mathrm{8}} +\mathrm{1}\right) \\ $$
Commented by Tawa1 last updated on 26/Jul/18
$$\mathrm{Please}\:\mathrm{any}\:\mathrm{workings}\:\mathrm{sir}\:???.\: \\ $$
Commented by ajfour last updated on 26/Jul/18
$${difficult}\:{explaining}..! \\ $$