Răspuns:
A={0,1,2}
B {-4,-3,-2,-1,0,1,2}
Explicație pas cu pas:
a)AUB={-4,-3,-2,-1,0,1,2}
A(---)B={0,1,2}
A-B=mulțime vidă
B-A={-4,-3,-2,-1}
