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(本题共两小题,每小题6分,满分12分)

(1)解不等式组:                  

 

(2)因式分解:

 

(1)

解:由①得 .··············································································· 2分

由②得 .··················································································· 4分

不等式组解集为.·································································· 6分

(2)解:

························································································ 2分

.·············································································· 6分

解析:略

 

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