Question

If alpha and beta are the zeros of the quadratic polynomial f(x) = x square -x-4 , find the value of 1 by alpha + 1 by beta - alpha beta

Answer 1

Answer:

Step-by-step explanation:

x^2+2x-x-2

x (x+2)-1 (x+2)=0

x=1; x=-2

1/alpha-1/beta

=1+1/2

=3/2