1 . 求
的值.
(1)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8cfb77bfb0cc2dfee2e2041cbc0814f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/225af773f42c6680f202329d70fb1b9f.png)
您最近一年使用:0次
2 . 求下列各式中
的值.
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41ad0d81a350c7a76cbc488a94589273.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7a3232a14bc6b27f7e4353ef0fbad69.png)
您最近一年使用:0次
3 . (1)求满足下列各式未知数的值:
①
;
②
.
(2)计算:
①
;
②
.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3e4db77c4922b1c3f58bb7eb1cdab8c.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/393b40a2fdedb540f7d33f65f0d757d2.png)
(2)计算:
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ca9e01048b3ea3c638b3e151cececcc.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba86c38c7395c07af2b426b4ebf71956.png)
您最近一年使用:0次
2024-05-08更新
|
84次组卷
|
2卷引用:山东省滨州市博兴县2023-2024学年七年级下学期期中数学试题
4 . (1)计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9986f7ac1471a93bebbaf1406c785731.png)
(2)求出式中x的值:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9986f7ac1471a93bebbaf1406c785731.png)
(2)求出式中x的值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ee645a423eab4baaa510ec37b656eef.png)
您最近一年使用:0次
5 . (1)计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/141b865e6cee1f33e17db3311bfda209.png)
(2)求出
的值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/141b865e6cee1f33e17db3311bfda209.png)
(2)求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b93962c21e1d066b59c2af9cae898f70.png)
您最近一年使用:0次
6 . (1)计算:
;
(2)求
的值:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a0e8ab0e45e5c7d91fcdec29fe66821.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a98001b17b58d4f4d5e59c612d58e0c2.png)
您最近一年使用:0次
7 . 定义:如果一个数的平方等于
,记为
,这个数i叫做虚数单位,那么和我们所学的实数对应起来就叫做复数,表示为
(a,b为实数),a叫这个复数的实部,b叫做这个复数的虚部,它的加、减、乘法运算与整式的加、减、乘法运算类似.
例如:计算:
;
.
(1)填空:
____,
____.
(2)用运算律计算:①
____;②
____.
(3)解方程:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73be79c02db553929619d957187e2077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc228995efbba2e64d7f1de747024cc4.png)
例如:计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b06fe21d8307307bc08135943f3a108.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/881543e58e1bd029da7a5844b97e73db.png)
(1)填空:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/350981ff121f7f03ee420461499300b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d45b691a408f1d5362bd7675f5bfb257.png)
(2)用运算律计算:①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac78dacc9fc8aa8408481393e353ce77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/205161d8ca06eff8abbec2c6a0d8eeb9.png)
(3)解方程:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/970723402c3160ecc52da95dcc7f7669.png)
您最近一年使用:0次
8 . 解方程:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b005a4df777313f79b3585095f92894.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3c8272c3166990a13c0e49a3efbe6e3.png)
您最近一年使用:0次
9 . 利用所学知识解下列解方程:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5f512aa07f7ad0265b2109fbc59502.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46df1d1b4aadc49033d60aa73a014d46.png)
您最近一年使用:0次
10 . 求下列各式中x的值:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b21014730734aa9c348439a91d68edf3.png)
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b21014730734aa9c348439a91d68edf3.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9571e233873f053a2ad15ae6dd2d454.png)
您最近一年使用:0次