rashikabutler351 rashikabutler351

03-12-2018
Mathematics

contestada

f(x)=x^2-5
g(x)=2x+7
Find (g o f) (x)

Respuesta :

jimrgrant1 jimrgrant1

03-12-2018

Answer:

2x² - 3

Step-by-step explanation:

note that (g ○ f)(x) = g(f(x))

substitute x = f(x) into g(x)

g(f(x)) = g(x² - 5 ) = 2(x² - 5) + 7 = 2x² - 10 + 7 = 2x² - 3

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