Question 39303
Let me show you by example...let's say we wish to find roots/zeroes of
6x^3 - 8x^2 + 5x - 3 = 0
We know our roots must be ± p/q where p are the factors of -3 and q are the factors of 6, so that our possible roots are
±1/1, ±1/2, ±1/3, ±1/6, ±3/1, and ±3/2.  All the others are redundant.