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Prove that is irreducible over only when or .

Quote: Originally Posted by Stiger Prove that is irreducible over only when or . if where then it's fairly easy to see that will divide so we may assume that (Wondering)

Quote: Originally Posted by NonCommAlg if where then it's fairly easy to see that will divide so we may assume that (Wondering) Why does divide ?(Crying) Please...give me some more detail explanation.