α,β are the roots and prove that α^n +β^n =2[cos nΠ/2]


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Question Number 54948 by tarun kunar last updated on 15/Feb/19

$α, β a r e t h e r o o t s a n d p r o v e t h a t α^{n} + β^{n} = 2 [\cos n Π / 2]$
Commented by tanmay.chaudhury50@gmail.com last updated on 15/Feb/19

$w r i t e t h e e q n . . .$
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