解答下列各题
(1)计算:
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022163850605945039/SYS201310221638506059450014_ST/0.png)
-(3.14-π)
-3tan30°+(-
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022163850605945039/SYS201310221638506059450014_ST/1.png)
)
-2-|
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022163850605945039/SYS201310221638506059450014_ST/2.png)
-2|;
(2)先化简,再求值:
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022163850605945039/SYS201310221638506059450014_ST/3.png)
,其中x=2-
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022163850605945039/SYS201310221638506059450014_ST/4.png)
.
考点分析:
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