先化简,再求值:
,其中
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e779db3d6b45455f5cbe1bb3e50fe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/746a66f8709533c472515756cd9997bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c50866229ec5a3640fb250f9bd2192b3.png)
更新时间:2022-10-27 10:43:36
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【知识点】 整式的加减中的化简求值解读