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If p,q, r are +ve and are in A. P. the r...

If p,q, r are +ve and are in A. P. the roots of quadratic equation `px^2+qx+r =0 ` are real for the values `A. | (r/p)-7| >= 4sqrt(3)` `B. | (p/r) -7| >= 4sqrt(3)` C. all p and r D. no p and r `

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