观察下列各组式子:
①
;②
;③![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32fceda9eb7eef3a15d780c821fa3e61.png)
(1)请根据上面的规律写出第5个式子;
(2)请写出第
个式子(用含
的等式表示),并证明.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae31548e1e6230bc89a6237ad2f4460d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fde5ccf6e56357c53c534e701715da94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32fceda9eb7eef3a15d780c821fa3e61.png)
(1)请根据上面的规律写出第5个式子;
(2)请写出第
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
更新时间:2021-05-12 15:37:47
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解答题-计算题
|
适中
(0.65)
【推荐2】(1)计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/886d07a7a05cccfff767fde50a534aad.png)
(2)下面是小祺同学化简分式
的过程,请仔细阅读并完成相应的任务.
任务一:①以上求解过程中,第一步的依据是______;
②小祺同学的求解过程从第______步开始出现错误,错误的原因是______.
任务二:请你写出正确的化简过程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/886d07a7a05cccfff767fde50a534aad.png)
(2)下面是小祺同学化简分式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99d2a1f87ef3af3ea976add173a34dea.png)
解:原式![]() ![]() ![]() ![]() |
②小祺同学的求解过程从第______步开始出现错误,错误的原因是______.
任务二:请你写出正确的化简过程.
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