Question 377906
Replace every x you see in the rational function with (n - 4) and do the math.


g(x) = (x^2-4)/4x ; g(n-4) 


Let every x you see in the function = (n - 4)


g(n - 4) = [(n - 4)^2 - 4)]/(4(n - 4)


Can you take it from here?