名校
1 . 规定新运算“
”:
,如:
.
(1)求
的值;
(2)若
,求x的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1df4e8e7594391f769093f91a15ba6f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b4de2b364bc40ec8f90fe34206335af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0052eb53e592e0524dde629f337caaa7.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4041adf0b0cf54e4e6d440f7f5728a52.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f94587105460a468f2367463411567.png)
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2024-03-29更新
|
307次组卷
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3卷引用:山东省济南市章丘四中、章丘一中初中部直升班联考2023-2024学年七年级下学期4月期中数学试题
2 . 若一个正数
的平方根为
和
,则
的值为 _____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b5a9de8a72dda70e3eefeb0a408ffd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f45e3987605ba25776180a282924409.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2024-03-25更新
|
369次组卷
|
5卷引用:山东省临沂市莒南县2023-2024学年七年级下学期期中数学试题
山东省临沂市莒南县2023-2024学年七年级下学期期中数学试题(已下线)专题02 实数(九大题型)-【好题汇编】备战2023-2024学年七年级数学下学期期末真题分类汇编(山东专用)江苏省南通市启东市启东蝶湖中学2023-2024学年七年级下学期月考数学试题江苏省南通市通州区金北学校2023-2024学年七年级下学期3月月考数学模拟试题内蒙古自治区鄂尔多斯市伊金霍洛旗2023-2024学年七年级下学期5月期中考试数学试题
3 . 若
是方程
的解,则a的值是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80aab2e9cc087383e92f718a5753d54a.png)
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4 . 小李在解方程
(
为未知数)时,误将
看作
,得方程的解为
,那么原方程的解为 ( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1271fb1291f09c73c05fbbdaf72b6822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7be6f009bfb61b11e4f87edb4132de3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cde4419a36437d5487b6023c3c6eb7c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 解方程
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c3d9d8afb1aa2129d909bee1111a77e.png)
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cae82df726e8ac9a7638fee8f367fd4.png)
(3)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/425f9fc10eebca5766759c9c5c5c4b52.png)
(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c3d9d8afb1aa2129d909bee1111a77e.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cae82df726e8ac9a7638fee8f367fd4.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/425f9fc10eebca5766759c9c5c5c4b52.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f1a70ab471261f2b9d5d4e8c8b39bf3.png)
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6 . 解方程:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cccd7988de7b7a0d2a78a78e7f1fbd71.png)
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d2d3aa1de44e899f31a61f8a6f51288.png)
(3)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cccd7988de7b7a0d2a78a78e7f1fbd71.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d2d3aa1de44e899f31a61f8a6f51288.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfaf9bab14a5c52fc2cb88833098cd8a.png)
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7 . 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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8 . 解下列方程:
(1)
;
(2)
;
(3)
;
(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e4cf3c9b8afd4fa596db089edb8245.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8429e49cd05b815fac8e9edd8e4c0541.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04fd6c9f4af967764474095217082499.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40d23c67e511f31fe147fd95e3590065.png)
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9 . 已知方程
的解同时也是方程
的解,则
的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21e4e01c978cd6e789881e60b3dd97cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/affafc988c29ea98071f505cba048c43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c7a8c9af365310df4068099e1599271.png)
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10 . 下列方程变形中,正确的是( )
A.方程![]() ![]() |
B.方程![]() ![]() |
C.方程![]() ![]() |
D.方程![]() ![]() |
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