SOLUTION: What is the coefficient of x3y2 in (3x – y)5 ?

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Question 436062: What is the coefficient of x3y2 in (3x – y)5 ?
Answer by stanbon(75887) About Me  (Show Source):
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What is the coefficient of x3y2 in (3x – y)5
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Ans: 5C3(3x)^3(-y)^2
= 10*27x^3y^2
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Coefficient = 270
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Cheers,
Stan H.