利用乘法公式简算:
(1)
(2)
(3)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28cb5d8540131092ea6a99fc1fe9285a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb886982ab8cabfaa30c42580933e761.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eae81d71d514b20b55141e1fd21810f9.png)
13-14七年级下·辽宁丹东·期中 查看更多[2]
更新时间:2016-12-05 20:40:15
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