Question

sendo A={3,4,5,67} e B= {5,6,7,8,9} determine.<br />
AUB=<br />
AUB=<br />
A-B=<br />
B-A=<br /><br />
me ajudem

Answer 1

AUB = {3,4,5,6,7,8,9}
A-B= {3,4,5,6,7} - {5,6,7,8,9} = {3,4}
B-A={5,6,7,8,9} - {3,4,5,6,7} = {8,9}