已知:
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edff1881635893293dd411ead8194aca.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fca41e4d5dcbd74d183f533b949e1b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b234d07533b8315337865dce24a31a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edff1881635893293dd411ead8194aca.png)
更新时间:2024-04-20 14:57:39
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【知识点】 运用平方差公式进行运算解读