In the expression of (a+b)^17, what is the coefficient of the term:_________a^12 b^5? (give a number)?

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2007-02-15 02:06:16 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

the general term of the expansion

(a+b)^n = nCr a^r b^(n-r)

thus in ur case

coeff = 17C12
= 17C5 (since nCr = nCn-r)

2007-02-15 02:14:06 · answer #1 · answered by usp 2 · 0⤊ 0⤋

2007-02-15 10:14:40 · answer #2 · answered by s madhavan 1 · 0⤊ 0⤋

Try doing ur homework on ur own. Hope 17C5 helps

2007-02-15 10:14:25 · answer #3 · answered by Keeper of Barad'dur 2 · 0⤊ 0⤋

6168

2007-02-15 10:18:21 · answer #4 · answered by richardwptljc 6 · 0⤊ 0⤋