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If alpha , beta , gamma are the roo...

If ` alpha , beta , gamma ` are the roots of ` x^3 -3ax^2 +3 bx -c=0` which are in H.P then ` beta =`

A

`c/b`

B

`-b/a`

C

`b/c`

D

`b`

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The correct Answer is:
A
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AAKASH SERIES-THEORY OF EQUATIONS-EXERCISE-III
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