Write the first four terms of the binomial expansion.(2x + 3y)7

A. 128x7 + 1344x6y + 6048x5y2 + 15,120x4y3
B. 823,543y + 6x6y2 + 5x5y3 + 4x4y4
C. 7x7  + 6x6y + 5x5y2 + 4x4y3
D. 128x7 y + 1344x6y2 + 6048x5y3 + 15,120x4y4


Answer: A

Mathematics

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