(2006•攀枝花)请将下面的代数式尽可能化简,再选择一个你喜欢的数(要合适哦!)代入求值:
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110301275108921/SYS201310191103012751089019_ST/0.png)
a+(1-a)+
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110301275108921/SYS201310191103012751089019_ST/1.png)
.
考点分析:
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(2006•攀枝花)如图,直线y=-
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与x轴交于点C,则△ABC的面积为
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(2006•攀枝花)分式方程:
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110301275108921/SYS201310191103012751089014_ST/0.png)
的解是x=
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