1.

Simplify: (3x + 2)3 + (3x - 2)3

A. 54x3 + 2x2 + 72x - 16
B. 54x3 + 12x2 + 72x
C. 54x3 + 72x
D. 54x3 + 72x - 16
Answer» D. 54x3 + 72x - 16


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