![](https://img.xkw.com/dksih/QBM/2016/7/1/1572856586625024/1572856592326656/STEM/0bd9fb2bbc0742168f51eca8264c1d16.png?resizew=60)
![](https://img.xkw.com/dksih/QBM/2016/7/1/1572856586625024/1572856592326656/STEM/bbf4b73401894d6c9c17f747ffcc6e84.png?resizew=19)
![](https://img.xkw.com/dksih/QBM/2016/7/1/1572856586625024/1572856592326656/STEM/ec494a4ecb70420dbe453141c830780b.png?resizew=32)
![](https://img.xkw.com/dksih/QBM/2016/7/1/1572856586625024/1572856592326656/STEM/e346509562614b43b22e420113010c54.png?resizew=25)
更新时间:2016-12-04 14:47:50
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【推荐1】若
的展开式中常数项为
,则
的值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5163a65fe456da6bd1ff8a8a765c8594.png)
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【推荐2】已知
的展开式中的常数项是672,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e8fd91d893168eb5b320b86e6e843f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
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