Question

If alpha and beta are the zeros of polynomial 2x2+11x+2 then find 1/alpha+1/beta -2alphabeta

Answer 1

Hey dear here is your answer,
sum of root=-11/2
product of root=1
so value of 1/a+1/b-2ab
=a+b-2(ab)2/ab
putting given values,
-11/2-2/1
=-11/2-2
=-11-4/2
=-15/2
Proud to help you