.......................................... exercitiu 4 cine ajutor va rog frumos
![Exercitiu 4 Cine Ajutor Va Rog Frumos class=](https://ro-static.z-dn.net/files/dd0/390d817147c830156c99b8b6f335c68d.jpg)
Răspuns:
A={-1,-2,-3}
B={-1,-2}
AUB={-1,-2,-3}
AUB(U cu susu-l in jos)={-1,-2}
A\B={-3}