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If x+1/x= sqrt5, then x^3+1/x^3 is equal...

If `x+1/x= sqrt5`, then `x^3+1/x^3` is equal to :
यदि `x+1/x= sqrt5` है, तो `x^3+1/x^3` का मान ज्ञात करें |

A

`3 sqrt5`

B

`4 sqrt5`

C

`2 sqrt5`

D

`5 sqrt5`

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