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Descompuneti in factori ireductibili in K[X]:


1. f=[tex]3X^{2} -4X+1[/tex] K=Q

2. f=[tex]X^{4}+X^{2}+1[/tex], K=Q

3.f=[tex]X^{3}-X^{2}-X+1[/tex], K=R

4.f=[tex]X^{3} +3X^{2} -2x-6[/tex], K=Q