在
的展开式中,含
项的系数是_________ .(用数字填写答案)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf68017d09f7fb8e16021785bdf8a2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d800f03de80068a1172beac3a2c75587.png)
更新时间:2016-12-04 08:38:14
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【推荐2】二项展开式
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e4487468ab2823d6dbf7f0ebd2eb38.png)
_______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/910ea46a07515d063ec05b4fd54b2ab8.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38ca9826499d09b88ac35a26f10ced0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e4487468ab2823d6dbf7f0ebd2eb38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/910ea46a07515d063ec05b4fd54b2ab8.png)
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