![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f35aaf0359b96ce1b01f051afab6c0a0.png)
更新时间:2022-05-07 09:24:37
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【推荐2】若
展开式的二项式系数之和为32,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47a28ebcae373876112a8feabccdff63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
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