Question Number 54948 by tarun kunar last updated on 15/Feb/19
![α,β are the roots and prove that α^n +β^n =2[cos nΠ/2]](Q54948.png)
$$\alpha,\beta\:{are}\:{the}\:{roots}\:{and}\:{prove}\:{that}\:\alpha^{{n}} +\beta^{{n}} =\mathrm{2}\left[\mathrm{cos}\:{n}\Pi/\mathrm{2}\right] \\ $$
Commented by tanmay.chaudhury50@gmail.com last updated on 15/Feb/19
$${write}\:{the}\:{eqn}... \\ $$