Answer:
The answer to your question is: 3x² + 20x -2
Step-by-step explanation:
F(x) = 4x + 2
g(x) = x² - 4
Find 5f + 3g (x)
First 5f = 5(4x + 2)
20 x + 10 expand
second
3g = 3( x² - 4)
= 3x² - 12 expand
Finally
5f + 3g = 20 x + 10 + 3x² - 12 simplify
= 3x² + 20x -2
