# a polynomial equation: P(m)|P(n) => m|n

Find all polynomials $P(x)\in\Bbb Z[x]$ such that for all $m,n\in\Bbb Z$, if $P(m)\mid P(n)$, then $m\mid n$.

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What have you tried? –  Mark Bennet Jun 1 '12 at 15:32
If this is homework, tag it as such. –  lhf Jun 1 '12 at 15:34