If ( x^(2) + (1)/( x^(2)))= (7)/( 4) " ...

If ` ( x^(2) + (1)/( x^(2)))= (7)/( 4) " for " x gt 0 ` what is the value of ` ( x^(3) + (1)/( x^(3)))`

A

`(3sqrt()3)//5`

B

`(3sqrt()15)//5`

C

`(3sqrt()15)//8`

D

`(3sqrt()5)//8`

Verified by Experts

The correct Answer is:

C

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