Question

if alpha and beta are the zeroes of the polynomial 5x square -7x +2 the sum of their reciprocal is​

Answer 1

1/α +1/β = α+β/ αβ

α+β is sum of roots = -b /a

                                = 7/5

 αβ  is product of roots = c/a

                                      = 2/5

                      required = 7/5  /   2/5

                                     = 7/2