化简或求值:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e2568c7bf182da6fb1cb1c18d3fc86f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a844385870b0a8239502304bff7f600.png)
2011·安徽宿州·一模 查看更多[1]
(已下线)2012届安徽省泗县双语中学高三摸底考试理科数学
更新时间:2016-12-01 00:05:53
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