is the polynomial irreducible

mercredi 2 avril 2014

1. The problem statement, all variables and given/known data

Is [tex]f(x)=x^2+1[/tex] irreducible in [tex]\mathbb{F}_2[x][/tex]

If not then factorise the polynomial.









3. The attempt at a solution



[tex]\mathbb{F}_2[x]=\{0,1\}[/tex]

[tex]f(0)=1[/tex]

[tex]f(1)=1+1=0[/tex]

Hence the polynomial is not irreducible





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