1 . 一同学在解方程
时,因看错了
的符号而得方程的解为
,试求
的值并正确地解方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bb8c0267d7c47d0d00e404b9e9f5a6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2 . 若
是方程
的解,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e61c6a6e960b2b20a9d99c4b81094b80.png)
____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23c0739dd286b7759e9206cc6b19886a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e61c6a6e960b2b20a9d99c4b81094b80.png)
您最近一年使用:0次
3 . 已知
是方程
的解,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e61d886e5d1cdb508a4c7d2a68d95c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
您最近一年使用:0次
4 . 已知关于x的方程
的解为
,则a的值为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdf6f7471c093378aba1ffc58ef02d85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
您最近一年使用:0次
5 . 解方程
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65a9c47d2e7ea1b72670ba3f55cb7250.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/425f9fc10eebca5766759c9c5c5c4b52.png)
您最近一年使用:0次
6 . 解下列方程:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7159bb6e093efdc69b07c3dd1b868bbd.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/999c42393580ada2d833695c810e78e9.png)
您最近一年使用:0次
7 . 解方程:
(1)
;
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/045aa89dc35568c3799bddb4c5ef95d9.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/333e11cee7e573ae2f1a734f59ac0f12.png)
您最近一年使用:0次
8 . 小明在解关于
的方程
时,误把
写成了
,从而求得此时方程的解为
,则原来方程的解为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1271fb1291f09c73c05fbbdaf72b6822.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/224d30ca84f1aeeeda7a718e751a4925.png)
您最近一年使用:0次
2024-02-19更新
|
50次组卷
|
2卷引用:江苏省连云港市海州区2023-2024学年七年级上学期期末数学试题
9 . 解下列方程
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42dc0702461d69e257553cf92e320fab.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced6a2a43b44f2c2cff0bf513b144924.png)
您最近一年使用:0次
10 . 解下列方程:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a433627272d209bf4dde3a9de034465.png)
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f13f0b9b9ffb40ed8cb5b3650e7e7d63.png)
(3)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8079b27a3587c2a30eff9d2d7d7083e4.png)
(4)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a433627272d209bf4dde3a9de034465.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f13f0b9b9ffb40ed8cb5b3650e7e7d63.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8079b27a3587c2a30eff9d2d7d7083e4.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2f0f63e83ecd2987c24e36aa7b25d42.png)
您最近一年使用:0次