Verify if the following polynomials are irreducible over Z3. p(x) = x^3+x+1 p(x)=x^4+1
Verify if the following polynomials are irreducible over Z3. p(x) = x^3+x+1 p(x)=x^4+1
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Verify if the following polynomials are irreducible over Z3.
p(x) = x^3+x+1
p(x)=x^4+1
I am wondering if the following result is correct.
p(x)=x^3+x+1 is irreducible over Z3 because:
p(0)=0+0+1=1 = 1 over Z3.
p(1)=1+1+1=3 = 1 over Z3.
p(2)=8+2+1=11 = 1 over Z3.
p(x)=x^4+1 is not irreducible over Z3 because:
p(1)=1+1=2 = 0 over Z3.
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