Respuesta :

Here you go!! Hope it helps
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Answer:

D. x² - 3x + 1

Step-by-step explanation:

let

f(x) = x² + 1

g(x) = 3x

find:  f-g

f-g = f9x) - g(x)

    = x² + 1 - 3x

    = x² - 3x + 1

therefore, D is the answer