Question

If `f(x) = 6x-5` and `g(x) = 3x+4`, what is `(g*f)(x-3)`?

Answer 1

`(g*f)(x-3)=18x^3-45x^2-47x+60`

Explanation:

(g*f)(x-3)

=(3x+4)(6x-5)(x-3)

`=(18x^2+9x-20)*(x-3)`
`=(18x^3+9x^2-20x-54x^2-27x+60)`
`=(18x^3-45x^2-47x+60)`