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Q.For the quadratic equation 3xsquare + px + 3 + 0 , p>0.If one of the roots is square of the other,then p=
a) 1/3 b) 1 c) 3 d) none of these

Profile image of Ram Tiwari
14 Years agoGrade 12
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4 Answers

Profile image of Chetan Mandayam Nayakar
ApprovedApproved Tutor Answer14 Years ago

let roots be q,q2, product of roots= 3/3 =1, q3=1, q=1, sum of roots= -p/3

Profile image of Ram Tiwari
14 Years ago

sir i also tried the same thing
by that p is coming out to be -6
but the answer given is option (c)

Profile image of shubham bhatia
ApprovedApproved Tutor Answer14 Years ago

since eqn says one root is square of other so if one root is q then other root is q square therfore qcube from product of roots is1 therefore q=1 or q=w(omega)complex root q=1 is rejected as p =-6 which is not possible therfore q=w and 1+w+wsquare=0 which is property of complex no since w is root there 3wsquare +pw +3=0 there p=3

Profile image of Ram Tiwari
14 Years ago

thank you sir