f(x)=x-1/x-4

Answer 1

What are you supposed to do with that function? Plot it? Describe it? Integrate it? Differentiate it? Specify the domain and range? There must be for to the problem that what you have written down

You should use parentheses to clarify that the numerator and denominator are.

Answer 2

There must be more to the problem than what you have written down.