Question

prove that
A union (B-A) = empty set ​

Answer 1

Answer:

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Answer 2

Answer:

A Intersection (B-A) = The set which is common to both      

• set A includes (A-B) +(A∩B)
• set A does not includes (B-A)

• so there will be no intersection between them

   In mathematics we denote nothing by ⊕(phi).

 so, A∩(B-A) =⊕

by the way in the question you have written union instead of intersection...

Step-by-step explanation: