若
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd7c09022c270853ca8b470b1106a82b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f285c23bbc61f073e174b411d4116d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfd989ddfbed4a6aa18ea57734522153.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2020-02-29 17:50:14
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【知识点】 通过对完全平方公式变形求值解读