设A={x|2x^2+ax+2=0} B={x|x^2+3x+2a=0} 且A交B={2}
求a的值 集合A B
人气:318 ℃ 时间:2020-05-14 09:00:29
解答
解;代入有:8+2a+2=0.a=-5 A={0.5,2},B={-5,2}
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