supposed that A,B,C and D, are subset the universal set U. prove that : 1....

supposed that A,B,C and D, are subset the universal set U. prove that :
1. (A-FRAME)n B =ø
2. B-A=BnA'
3.(A-B)n(C-D)=AnC-BUD
4. A-(B-A)=(A-B)U(AnC)
5. A-(AnB)=A-B
6A∆(B∆C) =(A∆B) ∆C.?

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Asked by jenny max on 9th January, 2022

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