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If alpha and beta are the roots of equation X square + 3 X + 1 is equal to zero and a n is equal to Alpha power n + beta power n and n where and belongs to natural number and the value of a A7 +A5 ÷A 6 is equal to
Dear student A we know x^2 + 3x + 1 = 0 Now A7 + A5 / A6 = Xn+2 + 3Xn+1 + Xn = 0 put n = 5 A7 + 3A6 + A5 = 0 A7 + A5 / A6 = – 3 RegardsArun
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