x+2≤6 => x≤4 => x∈{1,2,3,4}
j=[tex] 3^{x} [/tex] , x∈A =>
=> j=[tex] 3^{1} [/tex] => j=3
=> j=[tex] 3^{2} [/tex] => j=9
=> j=[tex] 3^{3} [/tex] => j=27
=> j=[tex] 3^{4} [/tex] => j=81
A={1,2,3,4}
B={3,9,27,81}
AUB={1,2,3,4,9,27,81}
A/B={1,2,4}
B/A={9,27,81}
AПB={3}