Toán Lớp 10: chứng minh rằng : với mọi A, B, C
A ∩ (B \ C) =(A ∩ B) \ (A ∩ C)
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Toán Lớp 10: chứng minh rằng : với mọi A, B, C
A ∩ (B \ C) =(A ∩ B) \ (A ∩ C)
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