Use Pascal's triangle to expand the binomial.(x - 7y)5
A. x5 - 35x4y + 490x3y2 - 3430x2y3 + 12,005xy4 - 16,807y5
B. x5 - 35x4y + 980x3y2 - 6860x2y3 + 12,005xy4 - 16,807y5
C. x5 - 35x4y + 490x3y2 - 3430x2y3 + 12,005xy4 - 16,807
D. x5 - 35x4y + 980x3y2 - 6860x2y3 + 12,005xy4 - 7y5
Answer: A
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