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[" Q.8of 75"quad " Mark for review "hat k],[" If "alpha,beta,gamma" are the roots of "x^(3)-px^(2)+qx-r=0],[" then "(alpha+beta)(beta+gamma)(gamma+alpha)=],[" pq-r "],[qquad (pq-3r)/(r)],[" O "pq-3r]

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