Question

If alfa and beta are the roots of the equation ax2+bx+c=0 and alfabeta =3 and a b c are in a.p then alfa +beta =

Answer 1

If alphabeta=3then,c/a=3. If a, b, c r in AP then 2b=a+c,then c=2b-a sub in c/a=3 then 2b-a/a=3then. -b/a=-2.               alpha+beta=-2