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The condition that x^(3)-ax^(2)+bx-c=0 m...

The condition that `x^(3)-ax^(2)+bx-c=0` may have two of its roots equal to each other but of opposite signs is :

A

`ab=c`

B

`(2)/(3)a=bc`

C

`a^(2)b=c`

D

none of these

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The correct Answer is:
A
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