A={a²,a+2,-3},B={a-3,2a-1,a²+1},A∩B={-3},求A∪B .谢谢,
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A={a²,a+2,-3},B={a-3,2a-1,a²+1},A∩B={-3},求A∪B .谢谢,
A={a²,a+2,-3},B={a-3,2a-1,a²+1},A∩B={-3},求A∪B .
谢谢,
A={a²,a+2,-3},B={a-3,2a-1,a²+1},A∩B={-3},求A∪B .谢谢,
a²+1≠-3
A∩B={-3},则
(1)若a-3=-3,即a=0,此时
A={0,2,-3},B={-3,-1,1}满足题意
A∪B={0,2,-3,-1,1}
(2)若2a-1=-3,即a=-1,此时
A={1,1,-3} 元素重复,不满足题意
所以
A∪B={0,2,-3,-1,1}