4) Let n-1 f(T) = T" +) a; · Ti i=0 be a monic polynomial of degree n > 1 with a; E Z for all 0 < i < n – 1. Show that if f(T) has a root in Q then it has also a root in Z.

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 26E
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4) Let
n-
f(T)
T" + > a; · T
i=0
be a monic polynomial of degree n 21 with a; E Z for all 0 < i<n - 1.
Show that if ƒ(T) has a root in Q then it has also a root in Z.
Transcribed Image Text:4) Let n- f(T) T" + > a; · T i=0 be a monic polynomial of degree n 21 with a; E Z for all 0 < i<n - 1. Show that if ƒ(T) has a root in Q then it has also a root in Z.
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