(1)计算:|-5|+
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230703915825063/SYS201310212307039158250015_ST/0.png)
+2
-1-sin30°;
(2)计算:(x-y+
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230703915825063/SYS201310212307039158250015_ST/1.png)
)( x+y-
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230703915825063/SYS201310212307039158250015_ST/2.png)
).
考点分析:
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