不等式,则2x2+bx+a>0的解集为()。 A.x>2 B.x<-3 C.2<x< 发布时间:2018-04-06 08:26 │ 来源:www.tikuol.com 题型:单项选择题 问题: 不等式,则2x2+bx+a>0的解集为()。A.x>2B.x<-3C.2<x<-3D.x>2或x<-3E.以上均不正确
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