Find a simplified form of the difference quotient for the function.f(x) = ax3 + bx

A. a(3x2 + 3xh + h2) + h
B. 3ax2 + 3axh + h2 + b
C. a(2x2 + 3x2 + 3xh + h2) + h
D. a(3x2 + 3xh + h2) + b


Answer: D

Mathematics

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