![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f83a03f894c1e80754097a01954ae317.png)
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更新时间:2022-07-07 14:54:12
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【推荐1】若二项式
的展开式的各项系数之和为64,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
___________ ,含
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【推荐2】
的展开式中
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c22212b9ae70e2b791d959e2aab33999.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a89e3c30f6e4d4c5db4378b05d987.png)
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