Question 147989
Solve the equation x^3-4x^2-x+4=0 
-------
Since the coefficients add up to zero, x=1 is a solution.
Use synthetic division to find others:
1)....1....-4....-1....4
.......1.....-3....-4..|..0

Quotient: x^2-3x-4
Solve the quadratic by factoring:
 (x-4)(x+1) = 0
x = 4 or x = -1
-------------------
All solutions: x = 1, or 4, or -1
===================
Cheers,
Stan H.