If \alpha,\beta are roots of the equation x^2+4x+8 then for any n∊N,\alpha^{2n}+\beta^{2n}=

Correct Answer is : 23n+1cosnπ2

TS EAMCET 2015 Solved Paper

Section: Mathematics

Question : 54 of 160

Marks: +1, -0

If α,β are roots of the equation x2+4x+8 then for any n∊N,α2n+β2n=

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