1 . (1)计算:
;
(2)下面是小亮化简分式的过程,请认真阅读并完成问题.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6d0125a00d49e30f6d473a5e2c7f96b.png)
……………第一步
……………………第二步
………………第三步
………………………第四步
……………………第五步
①以上化简步骤中,从第 步开始出现错误,错误的原因是 .
②直接写出该分式化简后的正确结果,并在
,
,0,1,2中选择一个合适的数代入求值.
③给该分式正确结果中的
减去1,得到的新代数式记为
.请求出
时的
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac34fe2ec67314847c86d9168b34dbb7.png)
(2)下面是小亮化简分式的过程,请认真阅读并完成问题.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6d0125a00d49e30f6d473a5e2c7f96b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2799e666e25185867433d4e48741b9a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71327cf39b2df0264eda56915f231f32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a908314b841fedc649ee1ddb11a3236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/443679ceea476b71a4e2e4bbd71f10f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86dbcb009fb9e25cc1d3f447c89fa482.png)
①以上化简步骤中,从第 步开始出现错误,错误的原因是 .
②直接写出该分式化简后的正确结果,并在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b74eb8a7738402df52d4a97262b85ca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29418e5014731850c55565b6bf47aa41.png)
③给该分式正确结果中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fde3fde1cd4ff0cadf7a7921c087770.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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2 . (1)计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bff155f8a4f691912b3f5217f81eee87.png)
(2)下面是小亮化简分式的过程,请认真阅读并完成问题.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6d0125a00d49e30f6d473a5e2c7f96b.png)
……第一步
……第二步
……第三步
……第四步
……第五步
①以上化简步骤中,从第___________步开始出现错误,错误的原因是___________.
②直接写出该分式化简后的正确结果,并在
,
,0,1,2中选择一个合适的数代入求值.
③给该分式正确结果中的x减去1,得到的新代数式记为A.请求出
时的x的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bff155f8a4f691912b3f5217f81eee87.png)
(2)下面是小亮化简分式的过程,请认真阅读并完成问题.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6d0125a00d49e30f6d473a5e2c7f96b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da1bca78dcc5510d0380ba70efc2375b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1114a93e84023d92fbe8dbd3c95cade2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d582e8b5bcc5d0d8ebd61d5a2317b4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38cd9011966f4eec7637def893016cfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86dbcb009fb9e25cc1d3f447c89fa482.png)
①以上化简步骤中,从第___________步开始出现错误,错误的原因是___________.
②直接写出该分式化简后的正确结果,并在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b74eb8a7738402df52d4a97262b85ca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
③给该分式正确结果中的x减去1,得到的新代数式记为A.请求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fde3fde1cd4ff0cadf7a7921c087770.png)
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3 . (1)解分式方程
;
(2)已知
,
与
成反比例,
与
成正比例,且当
时,
.求
关于
的函数解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/119975321c7cdcc08b405bbca677a5f4.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/845a73eeb5503d7b95dafee8dd0fece8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b924d856924e8cf2b172d5cacffe0610.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1904f4401fc1ce9b1d9fce4b382202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
4 . (1)解不等式组:
;
(2)解方程:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6924405bd79acb0eca9ebfa050c50888.png)
(2)解方程:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd4c3369a9f03f88c0950bf04bb86a38.png)
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5 . 解分式方程:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c0e0d62caf5db278a4021968ab7f58.png)
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6 . (1)解方程:
;
(2)解不等式组:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02f4d9408c47a7952956070812cb4696.png)
(2)解不等式组:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f830e6a5ec4bdaa40e05cb0dfc882437.png)
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名校
7 . (1)计算:
;
(2)解方程:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14a02a9d5f77577664cd25abe5afa760.png)
(2)解方程:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c448117eb970dea5f47b689bb7dcc2b.png)
您最近一年使用:0次
8 . (1)计算:
;
(2)解方程:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f7de38aa79c7a5cebc87cbad860d4b4.png)
(2)解方程:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd24a254b71cd4fcbca0fe2913ca939f.png)
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9 . 小汪解答“解分式方程:
”的过程如下:
你认为他的解题过程正确吗?若正确,请检验;若不正确,请指出错误(从第几步开始错),并写出正确的解答过程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df3dd0f52caf5d8afb9c5fba1193021.png)
你认为他的解题过程正确吗?若正确,请检验;若不正确,请指出错误(从第几步开始错),并写出正确的解答过程.
解:去分母得:![]() 去括号得: ![]() 移项得: ![]() 合并同类项得: ![]() 系数化为1得: ![]() 经检验, ![]() |
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10 . (1)解方程
;
(2)解不等式组
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68763cd59c97ddc74d793d9eb5f1ae9f.png)
(2)解不等式组
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8134391d77ac2a1d044f373389a9f82c.png)
您最近一年使用:0次