Let $f(x)=x^3+x+1\in\mathbb{Z}_2[x]$ and let $F=\mathbb{Z}_2(\alpha)$, where $\alpha$ is a root of $f(x)$. Show that $F$ is a field and construct a multiplication table for $F$.
Can you please help me approach this problem? I've tried searching around, but I don't really know what I'm looking for!
Thanks.
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