题目内容
设一元二次不等式
的解集为
,则ab的值是( )
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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='15530' and id < 2638567 and id<>'2638567' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='15530' and id > 2638567 and id<>'2638567' order by id asc limit 5