高中数学代数与函数一其他练习题10
题目内容

http://picflow.koolearn.com/upload/papers/20140823/20140823002654064402.gif的展开式中 http://picflow.koolearn.com/upload/papers/20140823/20140823002654080202.gif的系数是(   )  http://picflow.koolearn.com/upload/papers/20140823/20140823002654095345.jpg   http://picflow.koolearn.com/upload/papers/20140823/20140823002654111332.jpg

2021-07-12

A.20

B.40

C.80

D.160

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