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#16d8a2e5-5f04-4f00-82d1-6b02e1b66d67中上选择题交集定义与运算集合与常用逻辑用语

含参数的交集运算

设集合A={xx2(a+1)x+a=0}A=\{x\mid x^2-(a+1)x+a=0\}B={xx25x+6=0}B=\{x\mid x^2-5x+6=0\},若ABA\cap B恰含一个元素,则实数aa的取值集合为

A. A. {2,3}\{2,3\}
B. B. {1,2,3}\{1,2,3\}
C. C. {2}\{2\}
D. D. {1,3}\{1,3\}

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