If f(x) = x2 - 9 and g(x) = x2 - 16, find 
g(f(x)).
A. ((x2 - 9)2 - 16)(2x)
B. (x2 - 9)2 - 16
C. 4x3 - 50x2
D. 4x3 - 36x
Answer: D
Mathematics
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