Răspuns:
A={x apartine N| | x≤5} => x={0,1,2,3,4,5} => A={0,1,2,3,4,5}
B={y | y=x+2, x aparține mulțimii A}
daca x=0 => y=0+2=2
x=1 => y=1+2=3
x=2 => y=2+2=4
x=3 => y=3+2=5
x=4 => y=4+2=6
x=5 => y=5+2=7
=> y={2,3,4,5,6,7} => B={2,3,4,5,6,7}
A intersectat cu B={2,3,4,5}
A U B={0,1,2,3,4,5,6,7}
A-B={0,1}
B-A={6,7}
SPER CĂ TE-AM AJUTAT!! :))
