设集合A={X|X²+4X=0},B={X|X²+2(a+1)X+a²-1=0},(1)若A∩B=B,求a的值;(2
(2)若A∪B=B,求a的值.
人气:300 ℃ 时间:2020-10-12 06:03:08
解答
(1)-1或7
(2)1
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