1 . 回答下列各题:
(1)计算:
.
(2)求不等式组
的解.
(3)先化简,再求值
,其中x的值是方程
的根.
(1)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65d37748a847ea07f86e9d8987fc41b0.png)
(2)求不等式组
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e43d080c3647643a56a853d0e4685d6.png)
(3)先化简,再求值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/668ff378ae340df95a355acaf5806bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8034dddd265a186e29172623e3b9eadf.png)
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2 . (1)求不等式组
的整数解,可按下列步骤完成解答:
①解不等式①,得:
②解不等式②,得:
③把不等式①和②的解集在数轴上表示出来:
④原不等式组的解为:
⑤原不等式组的整数解为:
(2)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/410029de91aa64a49d81f35df1489d17.png)
①解不等式①,得:
②解不等式②,得:
③把不等式①和②的解集在数轴上表示出来:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/3/5abc164c-86c8-44db-8c59-1bdb001a0ffe.png?resizew=232)
④原不等式组的解为:
⑤原不等式组的整数解为:
(2)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/488c8a8ed3c5ccbf289849967ad572d8.png)
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3 . 解方程或不等式
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9c3a62a60d6980ce31614850fdeb0f4.png)
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c39832874059a4eba9897f2f1e741fa7.png)
(3)求不等式组
的最大整数解.
(4)解关于
的分式方程
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9c3a62a60d6980ce31614850fdeb0f4.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c39832874059a4eba9897f2f1e741fa7.png)
(3)求不等式组
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea34731ab35d0b4a20ece917d4095028.png)
(4)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3ae53c2c99b654c95e87623fc75eab4.png)
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4 . (1)解不等式组:
(2)先化简,再求值:(
-
)÷
,其中x=
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/731bc155992954c7899fb0669576e594.png)
(2)先化简,再求值:(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b60b122e651b49f676e07bd8c815006f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a76241e782e13eeee7c187507778aecf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b05e238548dc202137a63d8b20ff277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
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5 . (1)解方程:
;
(2)解方程
;
(3)解方程组
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bedf894f1ce8ccdb64ddb3a86feb7b46.png)
(2)解方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f0f2225c51f88aa9fc4f783525fb0c2.png)
(3)解方程组
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b402a08175027f5f4811f60ff4adeb5.png)
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解题方法
6 . (1)化简求值:
;
(2)解关于x的不等式:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5796a837ce061d7494540f0bc522923f.png)
(2)解关于x的不等式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7232718d2d78bad722a2ffc476059bc0.png)
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7 . 解下列关于
的不等式或不等式组:
(1)计算:
;
(2)解不等式组:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b3b9a754c601f6346e26578d9dadaab.png)
(2)解不等式组:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/884d32b458a26740d454c9c59eb711ee.png)
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8 . 解下列关于
的不等式或不等式组:
(1)设
,解不等式:
;
(2)解不等式组:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffc05cde4f00587cf3e7d3524b2bddf4.png)
(2)解不等式组:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7794539786aff30ed0e24158db88ae6b.png)
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9 . 回答下面两题
(1)解方程组:
.
(2)解不等式组
,并把解集表示在数轴上.
(1)解方程组:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9db95568c7b0de8f1bd421d3fd599345.png)
(2)解不等式组
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/751755737949b5e1d1e5e852331cf164.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/15/4ffdd2b1-f4b8-49ca-99b7-b71e4f8dda4d.png?resizew=223)
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10 . (Ⅰ)计算求值:
(1)
________________;
(2)
____________________;
(Ⅱ)解关于x的不等式:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24175597cab1d81a98da3851570d2ae6.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76606084f76f510b7a29c001b92cebf1.png)
(Ⅱ)解关于x的不等式:
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f444d17cd7da594f6b4166c28857df8.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d11c0ac42cde9e5c743659ce1a2997c2.png)
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