Respuesta :

sqdancefan
f(g(5)) = f(5-2) = f(3) = 3·3 - 6 = 3

f(g(5)) = 3

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Both f(x) and g(x) are polynomials, so their domain is "all real numbers". The same is true for f(g(x)).

The domain of f(g(5)) is 5.