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A maths , the binomial theorem
發問:
1.) (2x+y/4)^16 , 5th term 2) if the coefficient of x^4 in the expansion of (3+2x)^6 is equal to the coefficient of x^4 in the expansion of (k+3x )^6 , find k
最佳解答:
(1?2) http://i826.photobucket.com/albums/zz190/fai109/49.jpg
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