(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

In the ring Z([tex]\sqrt{}5i[/tex]) = n + m[tex]\sqrt{}5i[/tex], n and m integers, find the units.

2. Relevant equations

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3. The attempt at a solution

I know 1 and -1 are units, and my textbook seems to indicate that [tex]\sqrt{}5i[/tex] and -[tex]\sqrt{}5i[/tex] are also units, but I don't know if that's right because I don't know what the inverse of those elements would be -- multiplying them together gives you 5, right? Are there different units I haven't found?

thanks!

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# Homework Help: Units in a ring

Can you offer guidance or do you also need help?

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