Question

For f(x) = 3x +1 and g(x)=x²-6, find (ƒ•g)(x)​

Answer 1

B

Explanation:

(f • g)(x)

= f(x) × g(x)

= (3x + 1)(x² - 6)

each term in the second factor is multiplied by each term in the first factor, that is

3x(x² - 6) + 1 (x² - 6) ← distribute both parenthesis

= 3x³ + 18x + x² - 6

= 3x³ + x² + 18x - 6 ← in standard form