Problem 4. Let F₂ be the field of two elements, and let F2[x] be the ring of polynomials over F2. For each n = N, consider the following polynomial in F2[x]: f(x) = xon 5n +x +x 4n + x³n +1. (a) For which values of n, does f(x) factor into exactly two irreducible polynomials in F2[x]? (b) For which values of n, does f(x) factor into exactly three irreducible polynomials in F₂[x]?

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter8: Polynomials
Section8.2: Divisibility And Greatest Common Divisor
Problem 18E
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Problem 4. Let F₂ be the field of two elements, and let F2[x] be the ring of
polynomials over F2. For each n = N, consider the following polynomial in F2[x]:
f(x) = xon
5n
+x +x
4n
+ x³n
+1.
(a) For which values of n, does f(x) factor into exactly two irreducible polynomials
in F2[x]?
(b) For which values of n, does f(x) factor into exactly three irreducible polynomials
in F₂[x]?
Transcribed Image Text:Problem 4. Let F₂ be the field of two elements, and let F2[x] be the ring of polynomials over F2. For each n = N, consider the following polynomial in F2[x]: f(x) = xon 5n +x +x 4n + x³n +1. (a) For which values of n, does f(x) factor into exactly two irreducible polynomials in F2[x]? (b) For which values of n, does f(x) factor into exactly three irreducible polynomials in F₂[x]?
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