计算:
(1)
(2)
;
(3)
(4)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c0bf526b9ed5dbae3e07eab57d6138b.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f40aa4954b2024a1d9757c7dd4f7901.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23593b167ea832ac8f4d6ae533201c72.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/253ada49b0bd2ddfbccddfcc2395d4c3.png)
更新时间:2021-08-27 11:23:09
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解答题-计算题
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较易
(0.85)
【推荐2】下面是某分式化简过程,请认真阅读并完成任务.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/577e1752d227debf2124b6a5e5976850.png)
…第一步
…第二步
…第三步
…第四步
(1)任务一:填空
①以上化简步骤中,第 步是通分,通分的依据是 ;
②第 步开始出现错误,错误的原因是 .
(2)任务二:直接写出该分式化简后的正确结果.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/577e1752d227debf2124b6a5e5976850.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93a0760ab0beea6dd5fb1da5fba25e80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f024929d7a777ecc499a28989fc5e0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b1274bb9234c59826af7f87970ddf09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5e4c403759024e71362fdc528d89d8b.png)
(1)任务一:填空
①以上化简步骤中,第 步是通分,通分的依据是 ;
②第 步开始出现错误,错误的原因是 .
(2)任务二:直接写出该分式化简后的正确结果.
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