If the roots of the equation `px ^(2) +qx + r=0,` where `2p , q, 2r` are in G.P, are of the form `alpha ^(2), 4 alpha-4.` Then the value of `2p + 4q+7r` is :

if the roots of the equation px? +qx r 0, where 2p, a, 2r are in G,P, are of the form 5 a 2,4k 4. Then the value of 2p 4q +7r is (a) (b) 10 (c) 14 (d) 18 15. Let xi, x2, x3,...... xt be the divisors of positive integer n (including 1 and n)

Let alpha and beta be the roots of equation px^(2) + qx + r = 0, p ne 0 . If p, q , r are in A.P. and (1)/(alpha) + (1)/(beta) = 4, then the value of | alpha - beta| is :

Let alpha and beta be the roots of equation px^(2) + qx + r = 0 , p ne 0 . If p , q, r are in A.P . And (1)/(alpha ) + (1)/(beta) = 4 , then the value of |alpha - beta| is

If 3+4i is a root of equation x^(2)+px+q=0 where p, q in R then

If 3+4i is a root of equation x^(2)+px+q=0 where p, q in R then

Let alpha and beta be the roots of equation px^2 +qx+r =0 , p ne 0, if p,q, r are in A.P and (1)/ alpha +(1)/( beta ) =4 then the value of | alpha - beta | is

Show that the roots of the equation x^3 +px^2 +qx +r=0 are in G.P p^3 r= q^3

Let alpha and beta be the roots of the equation px^(2) + qx + r=0 . If p, q, r in AP and alpha+beta =4 , then alpha beta is equal to