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OpenStudy (anonymous):
Show that for any sets A and B, A = (A ∩ B) ∪ (A – B) and A ∪ (B – A) = (A ∪ B)
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OpenStudy (anonymous):
@satellite73
OpenStudy (anonymous):
first one you can understand it english if you are in A, you are either in B or you are not in B
OpenStudy (anonymous):
a nice venn diagram will show it
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