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If x+y= a and xy=b, then the value of 1/...

If x+y= a and xy=b, then the value of `1/x^3+1/y^3` is

A

`(a^3-3ab)/(b^3)`

B

`(a^3-3a)/(b^3)`

C

`(a^3-3)/h`

D

`(a^3-3)/(b^2)`

Text Solution

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The correct Answer is:
A
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