Answer:
[tex]x^{2} +x-4[/tex]
Step-by-step explanation:
To get the answer just subtract f(x) by g(x)
The work is shown below:
[tex](f-g)(x)= f(x)-g(x)\\\\(f-g)(x)= (x^{2} +1)-(5-x)\\\\(f-g)(x)= x^{2} +1-5+x\\\\(f-g)(x)= x^{2} -4+x\\\\(f-g)(x)= x^{2} +x-4\\\\[/tex]