i'm so confused on how to do this problem the way it is supposed to be done.
For what integers does divide in .
i know how to test for reduce all the coefficents to fit in and use the division algorithm to test whether it is a zero.
but how in the world do i do it for the general case?
id start with doing it with a=1,2,... until i found some sort of pattern with primes or something. but its finals time right now, and i have no time for that kind of exhaustive calculating for a homework prob. i just know there's gotta be a better way.