Question: How do I show this? 3.40. Let G be an abelian group and n E N. Let H = (a e G : a =

How do I show this?

How do I show this? 3.40. Let G be an abelian group

3.40. Let G be an abelian group and n E N. Let H = (a e G : a" = e} and K = (a" : a E G). Show that H and K are subgroups of G

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