Write the binomial expansion of the expression.(3x + 1)5
A. 243x5 + 15x4 + 90x3 + 90x2 + 15x + 1
B. 243x5 + 81x4 + 27x3 + 9x2 + 3x + 1
C. 243x5 + 405x4 + 270x3 + 90x2 + 15x + 1
D. (9x2 + 6x + 1)5
Answer: C
Mathematics
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