If f (x) is any polynomial of degree n21 over a field F, then there exists an extension K of F such that f (x) has n roots in K and [K:F]

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter8: Polynomials
Section8.3: Factorization In F [x]
Problem 16E
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Prove that
If f (x) is any polynomial of degree n 21 over a field
F, then there exists an extension K of F such that f (x) has n roots in K and
[K:F]<n!.
Transcribed Image Text:If f (x) is any polynomial of degree n 21 over a field F, then there exists an extension K of F such that f (x) has n roots in K and [K:F]<n!.
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