(本題共兩小題,每小題6分,滿分12分)
(1)解不等式組:
(2)因式分解:
(1)
解:由①得 .··············································································· 2分
由②得 .··················································································· 4分
不等式組解集為.·································································· 6分
(2)解:
························································································ 2分
.·············································································· 6分
解析
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