Question

If f(x) =5x^3-2 and g(x)= x+1, find (f-g)(x)

Answer 1

That would be 5x^3 - 2 - (x + 1) = 5x^3 - 2 - x - 1

Answer is 5x^3 - x - 3.

Its B

Answer 2

Option B is correct

`(f-g)(x) = 5x^3-x-3`

Explanation:

Given the functions:

`f(x) =5x^3-2`

g(x)= x+1

We have to find (f-g)(x).

`(f-g)(x) = f(x)-g(x)`

Substitute the given values we have;

`(f-g)(x) = 5x^3-2-(x+1)`

⇒
`(f-g)(x) = 5x^3-2-x-1`

Combine like terms;

⇒
`(f-g)(x) = 5x^3-x-3`

Therefore, the value of
`(f-g)(x)` is,
`5x^3-x-3`