Write the binomial expansion of the expression.(3x + 1)4
A. 81x3 + 108x2 + 54x + 12
B. 81x4 + 108x3 + 54x2 + 12x + 1
C. 81x4 + 108 x3 + 54x2 + 12x + 1
D. (9x2 + 3x + 1)4
Answer: B
Mathematics
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