[" 87.If zeros of the polynomial "f(x)=x...

[" 87.If zeros of the polynomial "f(x)=x^(3)-3px^(2)],[+qx-r" are in A.P.,then "],[[" (A) "p^(3)=pq-r," (B) "p^(3)=pq+r],[" (C) "2p^(3)=pq+r," (D) "2p^(3)=pq-r]]

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