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If 2 x + (2)/( x) = 3 then the value o...

If ` 2 x + (2)/( x) = 3 ` then the value of ` x^(3) + (1)/( x^(3)) + 2 ` is

A

`(3)/(4)`

B

`(4)/(5)`

C

`(5)/(8)`

D

`(7)/(8)`

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The correct Answer is:
D
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