If the zeroes of the cubic polynomial f(x) = kx3-8x2+5 are alpha-beta, alpha and alpha+beta then find the value of k?

If the zeroes of the cubic polynomial f(x) = kx3-8x2+5 are alpha-beta,

1.	If the zeroes of the cubic polynomial f(x) = kx3-8x2+5 are alpha-beta, alpha and alpha+beta then find the value of k?
Answer» The value of k is (8/3α) for the cubic polynomial f(x) = kx³-8x²+5 We will be using thesum of roots of a cubic polynomial to solve this.