Answer:
12x³ - 3x
Step-by-step explanation:
Given
f(x) = x and g(x) = 4x² - 1
Now,
3 f(x) * g(x)
= 3 * x (4x² - 1)
= 3x ( 4x² - 1 )
= 12x³ - 3x
Hope it will help :)
