题目
题型:填空题难度:简单来源:期中题
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820073320-47939.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820073320-82713.gif)
核心考点
举一反三
(1)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820073317-65099.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820073317-92259.gif)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820073317-94430.gif)
(3)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820073317-51728.gif)
(4)(
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820073318-24320.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820073318-91169.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820073318-12376.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820073318-62511.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820073318-35926.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820073314-83648.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820073314-86916.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820073314-72528.gif)
(2)先化简,再求值:
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820073314-27149.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820073315-61597.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820073258-81631.gif)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820073259-19606.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820073257-58962.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820073258-37627.gif)
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