Question

If alpha and peta are the zeores of the quatratic polynomial f(x)=x2-x-4find the value of 1/alpha +1/peta - alpha ×peta

Answer 1

please check attached

Answer 2

alpha= 1

beta= -4

1/alpha +1/beta - alpha x beta= alpha +beta/alpha x beta - alpha x beta

                                               = 1-4/-4 -1 x -4

                                               = 3

Hope it helps you!!!!!