SOLUTION: What is the Fifth Term in the Binomial expansion of (a-b)exponet 6?

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Question 668500: What is the Fifth Term in the Binomial expansion of (a-b)exponet 6?
Answer by swincher4391(1107) About Me  (Show Source):
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Using the binomial theorem for (a+b) kth term of exponent n, we get (n choose k) * a^(n-k) * b^k
(6 choose 5)*a%5E%286-5%29+%2A+%28-b%29%5E%285%29+=+6%2Aa%5E1%28-b%29%5E5+=+6a%28-b%29%5E5+=+-6ab%5E5