Is $\mathbb{Z}[x]$ an integral domain? If so, why?

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I'm trying to solve a larger problem about maximal and prime ideal, and knowing if $\mathbb{Z}[x]$ is an integral domain would really help me

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There is something slightly stronger that is true due to McCoy that you might find interesting regarding zero-divisors in polynomial rings and the relation to the original ring.

Let $F\in R[X]$ be a polynomial over a commutative ring $R$. If $F$ is a zero-divisor then $rF=0$ for some nonzero $r\in R$. The top answer here gives a sketch of the argument: Zero divisor in $R[x]$