Can someone explain to me how i would go about doing a problem like this? I don't really know where to start. GF refers to a Galois field. I'm struggling to even understand exactly what they want me to do here.

Can someone explain to me how i would go about doing a problem like this? I don't really know where to start. GF refers to a Galois field. I'm struggling to even understand exactly what they want me to do here.

Copyright © 2021 JogjaFile Inc.
The point here to realize is that all fields of size $p^n$ are isomorphic and that you construct a (and hence the) field of $p^n$ elements by taking ${\mathbb F}_p[x]/(f(x))$ for some irreducible polynomial $f(x) \in {\mathbb F}_p[x]$ of degree $n$.