Question

Show that if (the rest of the proof is coming in a comment because I need to insert an equation)

Answer 1

Show that if \[f(x) = a_{n}x ^{n} + a _{n-1}x ^{n-1} + ... + a _{1}x + a _{0}\]
where n is >= 1 and the coefficients are integres, then there is a positive integer y such that f(y) is composite.

Answer 2

God, I can't take this suspence! :-D

Answer 3

The hint is to prove by contradiction.