Find the condition to be satisfied by the coefficients of the equationx^2+q x+r=0, so that the ro...

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Find the condition to be satisfied by the coefficients of the equationx^2+q x+r=0, so that the roots are in the ratio 3: 4.
(a) 12 q^2=49 p r
(b) 12 q^2=-49 p r
(c) 49 q^2=12 p r
(d) 49 q^2=-12 p r

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