Răspuns:
Explicație pas cu pas:
A={x∈R/Ix-1I<2}
-2<x-1<2 x-1<2 x<3
-2<x-1 x>-1 ⇒A={0,1,2}
B={-1,0,`1,2,3,4,5}
A∪B=B={-1,0,`1,2,3,4,5}
A∪B=A={0,1,2}