If the roots of `ax^3 + bx^2 + cx + d = 0` are in H.P. then the roots of `dx^3 - cx^2 + bx - a = 0` are in

If the roots of ax^(3) + bx^(2) + cx +d = 0 are in G.P then the roots of dx^(3) - cx^(2) + bx - a = 0 are in

If the roots of ax^(3) + bx^2 + cx + d=0 are in G.P then the roots of dx^3 - cx^2 + bx -a=0 are in

If the roots of ax^(3) + bx^(2) + cx +d = 0 are in A.P then the roots of dx^(3) + cx^(2) + bx + a = 0 are in

If the roots of ax^3 + bx^2 + cx +d=0 are in G.P then the roots of ak^3 x^3 +bk^2 x^2 + ck x+d=0 are in

If the roots of ax^(3)+bx^(2)+cx+d=0 are in A.P.then the roots of dx^(3)+cx^(2)+bx+a=0 are in

If 1, -2, 3 are the roots of ax^(3) + bx^(2) + cx + d = 0 then the roots of ax^(3) + 3bx^(2) + 9cx + 27d = 0 are

If 1, -2, 3 are the roots of ax^(3) + bx^(2) + cx + d = 0 then the roots of ax^(3) + 3bx^(2) + 9cx + 27d = 0 are

If 2, - 2, 4 are the roots of ax^(3) + bx^(2) + cx + d = 0 then the roots of 8ax^(3) + 4bx^(2) + 2cx + d = 0 are