gregedwardferia gregedwardferia

23-01-2018
Mathematics

contestada

If f(x) = 2x^2 + 1 and g(x) = x^2 -7, find (f-g)(x)

A. 3x^2 - 6
B. 3x^2 + 8
C. x^2 - 6
D. x^2 + 8

Respuesta :

MrSmoot MrSmoot

18-03-2019

Answer:

D: x² + 8

Step-by-step explanation:

(f - g)(x) = f(x) - g(x) = 2x² + 1 - (x² - 7)

which is

2x² + 1 - x² - (-7)

2x² - x² + 1 + 7

x² + 8

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