若a，b，c＞0且a2+2ab+2ac+4bc=12，则a+b+c的最小值是

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='15531' and id < 2638721 and id<>'2638721' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='15531' and id > 2638721 and id<>'2638721' order by id asc limit 5