1 . 在如图所示的计算程序中,输入x的值是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/13/bff498da-f94c-4a92-b2f0-7a55f7cb5ffe.png?resizew=79)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/13/bff498da-f94c-4a92-b2f0-7a55f7cb5ffe.png?resizew=79)
A.4 | B.![]() | C.![]() | D.4或![]() |
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2 . 求下列各式中的x:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15e030d977917125e5825830903fdefc.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/542affe0fff533a49092044b90457040.png)
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3 . (1)计算:
;
(2)计算:
;
(3)解方程
;
(4)解方程:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3368282ee5c2d053324b30a6d8c0161.png)
(2)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/730cee8d23d002d5567e9b86b3e07f0c.png)
(3)解方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/397af027478631a2f249bb3e1a461831.png)
(4)解方程:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e71ef11ad6c52aa6c337c0a925b814df.png)
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2023-12-12更新
|
58次组卷
|
2卷引用:河南省新乡市卫辉市2023-2024学年八年级上学期期中数学试题
4 . 对于任意实数a、b,用“※”定义新运算如下:
(1)
.如
.已知
的结果是6,求
的值.
(2)
.如
.已知
结果为
,求
的值.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9fea8f712a295beb70386a408cb6005.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35c7fee08ac4216c3ce8c88c64d2f164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0897ff39452f2889b22ae60f49f20496.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe43fb843a66594f9b316608b6ae1b72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06ffcbbd23e80ed77b2a98df57494b70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40cb7bb9bf1735ec1a0c53d47db4637d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb9c3c4713a57bdd1553dbf2c2a661f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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5 . 计算
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c606e7a0c68658d44e52f3cd1d71fe8a.png)
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30fa7b5ad6e5ac73d6bc096768e91417.png)
(3)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bde438fda5f5346f329140c6738c996e.png)
(4)求
值
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c606e7a0c68658d44e52f3cd1d71fe8a.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30fa7b5ad6e5ac73d6bc096768e91417.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bde438fda5f5346f329140c6738c996e.png)
(4)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa49bdb008fc6bd7c77760b3e5a09db5.png)
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6 . 计算:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a6e14a45f5c7619b000a786ee146ed3.png)
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a6e14a45f5c7619b000a786ee146ed3.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59b00a14dc322b89cbf813f5fd96497b.png)
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7 . 解答下列问题:
(1)计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf26ceeea652858841f51626e247e66.png)
(2)求出式子中x的值:
(1)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf26ceeea652858841f51626e247e66.png)
(2)求出式子中x的值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a8cb9e5b695564797c7fdaa58f7e9a8.png)
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8 . 求下列各式中x的值.
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/088da7569441fcd05f78290d2e0bdee5.png)
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/088da7569441fcd05f78290d2e0bdee5.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e45e9da297cdcb6db3dc6341108bc2f.png)
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9 . 利用直接开方法解方程:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/814ad85af73a9237b9dbd216722e1108.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c432380cbeffeb5ce88010b3cb093ad8.png)
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10 . 求x的值:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d414c3880b87b50ea494dc474e2785.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbc85f6ef818e93f4acfd18a3e76539d.png)
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