alonapopovych2005 alonapopovych2005

09-01-2020
Mathematics

contestada

What is the value of f ( − 3a ), if f ( x ) = 2x 2 + 4x ?

Select one:
a. 9a 2 - 12a
b. 4a 2 - 9a
c. 18a 2 - a
d. 18a 2 - 12a

Respuesta :

gcantiga44 gcantiga44

09-01-2020

Answer:

d. 18a² - 12a

Step-by-step explanation:

f(x) = 2x² + 4x

f(-3a) = 2(-3a)² + 4(-3a)

2(-3a)² + 4(-3a)

2(9a²) + (-12a)

18a² - 12a

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