For every n > 2, prove that U(n)2 = {x2 | x ? U(n)} is a proper subgroup of U(n).

# For every n > 2, prove that U(n)2 = {x2 | x U(n)} is a

## Problem 75E Chapter 8

Contemporary Abstract Algebra | 8th Edition

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Problem 75E

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For every n > 2, prove that U(n)2 = {x2 | x U(n)} is a