计算:
(1)
;
(2)
;
(3)
;
(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94b13cff0f213d8bf65b8ea693a9e6c5.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae006ebe49841b79ef1c057783441f9.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/537c76232ed987628728ea5321dfb1b0.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ded266c0ff96731b1af250ba1836cfbe.png)
更新时间:2024-03-14 14:20:33
|
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解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】定义一种新的运算“
”:
,比如:
.
(1)求
的值;
(2)若
,求x的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c3c2f679d53b91088ba6eb14c16cbc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f3161e299ec30dc714ff6bbac037c07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f86a89594eb5188004426813e6174af7.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2139d3d37fcc51cdafb9903a6040b8d4.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c2c3df311cd766ba2862b12807b5400.png)
您最近一年使用:0次
解答题-计算题
|
适中
(0.65)
【推荐2】计算题:
(1)﹣7+4
(2)(﹣2)×5
(3)(﹣
﹣
+
)÷ ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/451295d74bed9dbbf5ceb9c75a22fc21.png)
(4)
.
(1)﹣7+4
(2)(﹣2)×5
(3)(﹣
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2a698891d42c70b597f0da4f215f09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b696b79a748797ef1e56fa31ee9a450d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cc0f4e88a98b2b25320e4bed691342b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/451295d74bed9dbbf5ceb9c75a22fc21.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/924fdfa95a51b0ad5eafc8d53226206b.png)
您最近一年使用:0次