题目内容
一元二次不等式ax2+bx+1>0的解集是(-
,
),则a+b的值是( )
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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='15528' and id < 2627617 and id<>'2627617' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='15528' and id > 2627617 and id<>'2627617' order by id asc limit 5