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यदि x + (1)/(x) = sqrt(5) है, तो x^(3) ...

यदि `x + (1)/(x) = sqrt(5)` है, तो `x^(3) + (1)/( x^3)` बराबर है:

A

`3 sqrt5`

B

`4 sqrt5`

C

`2 sqrt5`

D

`5 sqrt5`

लिखित उत्तर

Verified by Experts

The correct Answer is:
C
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