Question

If f(x) = 3^2 + 10x and g(x) = 2x-4, find (f-g)(x).

Answer 1

What we know:

`f(x)=3^2+10x\\g(x)=2x-4`

(Also,
`3^2=9`)

What we need to solve:

`(f-g)(x)` (This is equal to
`f(x)-g(x)`)

How you have to subtract
`f(x)` with
`g(x)` to get:

`(f-g)(x) = f(x)-g(x) = 9+10x+2x-4 = 12x+5`

Thus, the answer would be:

`12x+5`