Let p be a prime and let q = p^2. Show that Zq[x] has a unit that is not a constant polynomial.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter1: Fundamental Concepts Of Algebra
Section1.3: Algebraic Expressions
Problem 41E
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All about polynomials.

(a) Let p be a prime and let q = p^2. Show that Zq[x] has a unit that is not a constant polynomial.

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