Question

Let f(x) = x2 − 9 and g(x) = 3x − 4. what is (f · g)(−3)?

Answer 1

`0`

Explanation:

`(f*g)=f(x)xxg(x)`

`=(x^2-9)*(3x-4)=3x^3-4x^2-27x+36`

Substituting `x=-3`

`3(-3)^3-4(-3)^2-27(-3)+36=0`

`(f*g)(-3)=0`