Answer:

Explanation:
Complete Question:
Given the functions,
and
, perform the indicated operation. When applicable, state the domain restriction.
(f-g)(x)
(f-g)(x) basically means subtract the function g from the function f and put "x" into "x". Since there are no values in place of "x", just "x" itself, we simply subtract function g from function f and that's it.
Doing algebra, we have:

The first answer choice is right,
