解下列方程(组)
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e37c422752847d648b210aaac4494c.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d10fec8ece6f7f4140d1cf6ea386599.png)
更新时间:2024-03-26 13:06:40
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相似题推荐
解答题-问答题
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适中
(0.65)
【推荐2】我们规定:使得
成立的一对数a,b为“积差等数对”,记为
.例如:因为
,
,所以数对
都是“积差等数对”.
(1)判断下列数对是否是“积差等数对”:
①
___________(填“是”或者“否”);
②
____________(填“是”或者“否”);
③
____________(填“是”或者“否”);
(2)若数对
是“积差等数对”,求
的值;
(3)若数对
是“积差等数对”,求代数式
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c97a0871c8e973ea26c6cb7ed738dae5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8447963d6aa98da278a1d3da1f1acc18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95fb594dfc867a00ebd9bff359d09ea2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d5935ce9ede08a25aba56964de5e7c.png)
(1)判断下列数对是否是“积差等数对”:
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bac7c28099bfbb7dc2a45ad166eace05.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd6ca7f9436b83d7a76074cee0d44869.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e6dc7f0453536be0fc76d28ecaee7e1.png)
(2)若数对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1cc12877eb3be078ac11b093f7dfeca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)若数对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/957ddf70ca17b780c6518f00dd94fd6e.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】已知关于
的二元一次方程
和
.
(1)如果
是方程
的一个解,求
的值;
(2)当
时,求两方程的公共解;
(3)若
是已知两方程的公共解,当
时,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d708cb763716467219215cdc0782c0a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69ceb895a125e5b80766f5058a92f2e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fed80d1f8a67bbd486fe376b2adfd632.png)
(1)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34b8a9a1735c1202104672136acd13f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69ceb895a125e5b80766f5058a92f2e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5f28ecbff0953654a8c2845ff25213a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ae28fb23bca7964f9d7d51cbf912219.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8112f9185c7d48b015d9cd0525616b31.png)
您最近一年使用:0次