Question

if one root of ax^2 + bx + c =0 is doubled and another is halfved then the new quadratic equation formed has equal roots then the discriminant of ax^2 + bx + c = 0 is

Answer 1

let roots = s and t

2s + t/2 = -b/a

st = c/a

Answer 2

is my approach correct

Answer 3

seems so .. try working ahead.

Answer 4

hmm .. the new equation has equal roots. don;t get confused with the original equation.

Answer 5

yes!