what is the general term in the expansion of : ( 3x.sq - 2y ) raised to power of 7 ??

Asked by shuchi.saumya | 28th Aug, 2010, 12:00: AM

Expert Answer:

The general term of x-yn is the (r+1)th term.tr+1= nCrxn-r(-y)rSo for 3x2-y7:tr+1= 7Cr(3x2)7-r(-2y)r       =(-1)r  7Cr(37-r2r)(x14-2ryr)">

Answered by  | 28th Aug, 2010, 09:22: PM

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