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A={-3,-2,-1,0,1,2}
B={2,3,4,5}
A) AUB={-3,-2,-1,0,1,2,3,4,5}
B) A-B={-3,-2,-1,0,1}
B={2,3,4,5}
A) AUB={-3,-2,-1,0,1,2,3,4,5}
B) A-B={-3,-2,-1,0,1}
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