(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:

(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:

题型:解答题难度:一般来源:不详
(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:
答案
(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

举一反三
(11·永州)分解因式:=________________.
题型:填空题难度:简单| 查看答案
(11·永州)下列运算正确是(   )
A.B.C.D.

题型:单选题难度:简单| 查看答案
下列运算正确的是
A.B.
C.D.

题型:单选题难度:一般| 查看答案
设X、y定义为,X*2定义为X*2= ,则多项式( X*2)在x=2时的值为(    ).
A.19B.27C.32D.38

题型:单选题难度:一般| 查看答案
(本题满分10分),观察按下列规则排成的一列数:

(1)在这列数中,从左起第m个数记为F(m), 时,求m的值和这m个数的积。
(2)在这列数中,未经约分且分母为2的数记为C,它后面的一个数记为d,是否存在这样的两个数c和d,使cd=2001000,如果存在,求出c和d;如果不存在,请说明理由。
题型:解答题难度:一般| 查看答案
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