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If x^2+p x=1 is a factor of the expressi...

If `x^2+p x=1` is a factor of the expression `a x^3+b x=c ,` then `a^2-c^2=a b` b. `a^2+c^2=-a b` c. `a^2-c^2=-a b` d. none of these

A

`a^2+c^2=-ab`

B

`a^2-c^2=-ab`

C

`a^2-c^2=ab`

D

none of these.

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