How do I find the ideals in the ring $\mathbb F_3[x]/(x^2+2)$?

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Clearly $\{0\}$ and $\mathbb F_3[x]/(x^2+2)$ will be ideals. How would I find the others?

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Hint: $x^2+2=x^2-1=(x-1)(x+1)$

Now recall that $F_3[x]$ is a principal ideal domain.