Question

If p(x)=x^3-x-4. Find the value of 1/alpha+1/beta-alpha*beta

Answer 1

Alpha Beta Must be the root of the eq .In such a case find the root by equating to zero then x(x^2-1)=4 so either x=4 and x^2-1=1 or x=1 and x^2-1=4 or x=2 and x^2-1=2 ,Solve Accordingly.