Am nevoie de ajutor la C si D va rog. Dau coroana.

Răspuns:
A\B={3,4,7,2,1,-2}\{1,2,5,10,-1,-2,-5,-10}={3,4,7}
B\A={1,2,5,10,-1,-2,-5,-10}\{3,4,7,2,1,-2}={5,10,-5,-10,-1}
Explicație pas cu pas:
Sper ca e ok .