先化简,再求值:2x﹣3(x﹣
y2)+2(﹣
x+y2),其中x=3,y=﹣2.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
更新时间:2022-03-06 22:28:25
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【知识点】 整式的加减中的化简求值解读