Répondre :
comment decomposer p(i)= i^4-2i^3+3i^2-2i+2=0 ?
p(i)= i^4-2i^3+3i^2-2i+2
=(i²)²-2(i²)*i+3i²-2i+2
=(-1)²+2i-3-2i+2
=-2+2i-2i+2
=0
p(i)= i^4-2i^3+3i^2-2i+2
=(i²)²-2(i²)*i+3i²-2i+2
=(-1)²+2i-3-2i+2
=-2+2i-2i+2
=0