Question

formula to calculate cubic polynomial and zeroes of cubic polynomial

Answer 1

Answer:

Zeroes of a cubic polynomial

y=(x−4)(x−1)(x+2). y=x3−3x2−6x+8. Note that it does pass through the points [4,0], [1,0] and [−2,0], as it should by Descartes' Factor theorem (which you will find in Factors of quadratic polynomials and zeroes).