若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ac50bcc158e9802ef89029ab6a0b0fa.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7ace4243770ad0e0dd050f41939f4f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ac50bcc158e9802ef89029ab6a0b0fa.png)
更新时间:2023-12-01 18:57:09
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【知识点】 已知式子的值,求代数式的值解读