Question

PLEASE HELP!! NEED NOW!!!

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

Answer 1

4

Explanation:

In this problem, we have two functions:

`f(x)=x^2-5\\g(x)=4x-4`

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

`(f-g)(5)`

The definition of difference function is:

`(f-g)(x)=f(x)-g(x)`

In this case therefore, it means

`(f-g)(5)=f(5)-g(5)`

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

`f(5)=5^2-5=20\\g(5)=4\cdot 5-4=16`

Therefore, the "difference" function is:

`(f-g)(5)=20-16=4`