若
的展开式中
的系数为 150 , 则
__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f3179c7c04e2d3b6cde7e112eb009b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d92c048be6172a8d4eb8275016346699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49c5def0ed3f52a136711750969a0980.png)
更新时间:2022-12-26 15:44:44
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【推荐1】已知
的展开式中
的系数为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b65906fc9ed093120031a25d9fd1ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d800f03de80068a1172beac3a2c75587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b06e95b57b7a81cd81d05557a11fa92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
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填空题-单空题
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较易
(0.85)
名校
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【推荐2】已知
展开式中常数项为160,其中实数a是常数,则展开式的各项系数和为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f153133e4031749800265c6119ecc00.png)
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