A
[
,
] × 
B
[
,
]
 C
[
,
] × 
D
[
,
]
 
(A×B)∪(C×D)
(A×B)∩(C×D)
(A×B)\(C×D)
(C×D)\(A×B)
((A×B)∪(C×D))\((A×B)∩(C×D))
-5
5
0
5
-5