SOLUTION: i need to evaluate the question.5th term of (x-y)7

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Question 240387: i need to evaluate the question.5th term of (x-y)7
Answer by Alan3354(69443) About Me  (Show Source):
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i need to evaluate the question.5th term of (x-y)7
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Use Pascal's triangle.
1
1 2 1
1 3 3 1
1 4 6 4 1
1 5 10 10 5 1
1 6 15 20 15 6 1
1 7 21 35 35 21 7 1
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The 5th term is +35x^3y^4