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If a,b,c are in H.P., then the value of ...

If a,b,c are in H.P., then the value of
`((1)/(b)+(1)/(c)-(1)/(a))((1)/(c)+(1)/(a)-(1)/(b))` is

A

`(2)/(bc) - (1)/(b^(2))`

B

`(1)/(4) ((3)/(c^(2)) + (2)/(ca) - (1)/(a^(2)))`

C

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

D

noe of these

Text Solution

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The correct Answer is:
A, B, C
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