Find the first four terms of the indicated expansion.(x1/3 - y)9
A. x3 - 9x2y + 36xy2 - 84y3 + . . .
B. x3 - 9x8/3y + 36x7/3y2 - 84x2y3 + . . .
C. x3 - 9x8/3y + 72x7/3y2 - 504x2y3 + . . .
D. x3 + 9x8/3y + 36x7/3y2 + 84x2y3 + . . .
Answer: B
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A. 
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C. 
D. 
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< 0
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