f(x)=x^2-5
g(x)=4x-4
Find (f-g) (5)

4

Step-by-step explanation:

In this problem, we have two functions:

Here we want to calculate the value of the "difference" function for x = 5:

The definition of difference function is:

In this case therefore, it means

Substituting x = 5 into the expressions of the two functions, we have:

Therefore, the "difference" function is:

a = 11 : 4

b = 38

c = 1 for every 6