Use Pascal's triangle to expand the binomial.(x + 3)5
A. x5 + 15x4 + 180x3 + 540x2 + 405x + 243
B. x5 + 15x4 + 90x3 + 270x2 + 405x + 243
C. x5 + 15x4 + 90x3 + 270x2 + 405x + 3
D. x5 + 15x4 + 180x3 + 540x2 + 405x + 3
Answer: B
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A. 
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D. 
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