Solve the problem. Assume all variables represent nonnegative real numbers.For f(x) = x -  and g(x) = x - , find (f ? g)(x).

A. (f ? g)(x) = x2 - 5
B. (f ? g)(x) = x2 + 2x + 5
C. (f ? g)(x) = x2 + 5
D. (f ? g)(x) = x2 - 2x + 5


Answer: D

Mathematics

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