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यदि x = (√5 + 1)/2,  तो सिद्ध कीजिये (x^3 + 1/x^3) + 2(x^2 + 1/x^2) - 2(x + 1/x) = 6

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यदि x = (√5 + 1)/2,  तो सिद्ध कीजिये (x3 + 1/x3) + 2(x2 + 1/x2) - 2(x + 1/x) = 6

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 = 2√5 + 2(3) - 2(√5) = 6 = R.H.S.

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