Question

Dose of quadratic polynomial x square - x minus 4 find the value of one upon alpha plus one upon beta minus alpha beta

Answer 1

x2-x-4 is quadratic polynomial
So sum of zeroes =-b/a
=-(-x)/1=x
Product of zeroes=c/a
=-4/1
=-4

So 1/alpha+1/beta -alpha beta=
Beta+alpha/alpha beta- alpha beta
so x/-4-(-4)
=. x-16/-4
So -4x-64=0