Let \\alpha, \beta be the roots of 2 x^{2}-5 x+2=0, if a_{n}=\\alpha^{n}+\\beta^{n} for n \\geq1 then 4 (a_{10}+a_{8} )=k . a_{9} then k=

AP and TS EAMCET Engineering Model Paper 3

Question : 7 of 160

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Let α,β be the roots of 2x2−5x+2=0, if an=αn+βn for n≥1 then 4 (a10+a8)=k.a9 then k=

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