1 . 解下列方程(组):
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307d61301f345403afca280c0eb54b3b.png)
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307d61301f345403afca280c0eb54b3b.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f0ed9a30cd1abe206b57601186fac4a.png)
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2 . 解下列方程:
(1)
.
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2f266f6c45264a0756e2c02bab02f9e.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4990ac41147e634b7f9ba4d05f198568.png)
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3 . 解下列方程:
(1)
.
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b37bc2cb4e4c4fa374cde27578d57dc8.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cceb3545571da2a29549fa687ff0f9b8.png)
您最近一年使用:0次
4 . 如图,在
的幻方中,填入9个数字,使得每一横行、每一竖列以及每条对角线上的三个数之和都相等,按照以上规则填成的幻方中,则x的值为____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/777d8fccf0cf8b55a68488fe48b78744.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/15/67379d32-3e1e-4fee-8546-358faa162339.jpg?resizew=99)
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5 . 若关于x的方程
的解是
,则k的值为 _______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f57149c7f74f647d3aa4c8da53416cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
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6 . 若当
时,代数式
,则a的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c9132d46866db07abfe7592726125de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a7f2a69ee6f74e6c16d2bf64b7d66a2.png)
A.![]() | B.![]() | C.6 | D.12 |
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2024-03-15更新
|
47次组卷
|
4卷引用:2014-2015学年山西省大同市矿区七年级上学期期末质量检测数学试卷
7 . 小华想找一个解为
的方程,那么他可以选择下面哪一个方程( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fb489e91a4b601413959b0954531df8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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8 . 解方程:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e0a76f52f51718158ab5484a4360ad6.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4094a3f8c0b987d96356e56a63b887bd.png)
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9 . 解方程
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e37c422752847d648b210aaac4494c.png)
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6c8c223b13cf2898e0534272cb6e67.png)
(3)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2874043524477b53cfefd09c369a6c6.png)
(4)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e37c422752847d648b210aaac4494c.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6c8c223b13cf2898e0534272cb6e67.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2874043524477b53cfefd09c369a6c6.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d63b8b4e26d15720e6dcfee30c5e4b43.png)
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10 . 解方程
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15844cbf996aa6d3027c37ee148ea0d7.png)
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15844cbf996aa6d3027c37ee148ea0d7.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d55184b6ab93e545854de446f86a2d5.png)
您最近一年使用:0次