已知:
,
,则
的值是_____________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff7e62312dbd1cd5b50a6dc7fdfc166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46e9160fc1653882516ce2f03963b12c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f0281e6bbdbe08beeccb55adf84536.png)
20-21七年级下·浙江绍兴·期末 查看更多[2]
更新时间:2021-09-28 17:00:58
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【知识点】 通过对完全平方公式变形求值解读