Answer
This is just a restatement of the definition. An element is in (AU B) -
(A Ո B) if it is in the union (i.e., in either A or B), but not in the intersection (i.e., not in both A and B).
Work Step by Step
The symmetric difference of A and B, denoted by A ⊕ B,is the set containing those elements in either A or B, but not in
both A and B. so A U B have all the elements of both A and B and AՈB have all the common elements
A U B - A Ո B set consist of all the elements of A and B excluding the common elements
