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What is the expended form of RHS? |
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Answer» Step-by-step explanation: usual, PROVE it using the GENERAL heuristic that X=YX=Y if and only if X⊆Y and X⊇Y.X⊆Y and X⊇Y. In other words, take a GENERIC ELEMENT of A×(B−C)A×(B−C) and show that it also must be an element of (A×B)−(A×C)(A×B)−(A×C), and vice versa. |
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