Use Pascal's triangle to expand the binomial.(a + b)4
A. a4 + a3b + a2b2 + ab3 + b4
B. a4 + 4a3b + 6a2b2 + 4ab3 + b4
C. a4 + b4
D. a4 + 5a3b + 10a2b2 + 10ab + 5ab3 + b4
Answer: B
Mathematics
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