x^3 - 4x^2 + 2x + 1 = 0 solving for roots
using x^3 - 4x^2 + 2x + 1 = 0
1. how many possible positive roots are there
2. how many possible negative roots are there
3. what are the possilbe rational roots
4. using synthetic subtitution, which of the possible rational roots is actually a root of the equation
5. find the irrational roots of the equation using the quadratic formula to solve the depressed equation.