Question

f(x) = x^2 - 5

g(x) = 4x - 4

Find (f-g) (5)

4

-5

-4

5

Answer 1

Answer:

The correct answer option is: 4.

Step-by-step explanation:

We are given the following two functions and we are to find the value of $( f - g ) ( 5 )$:

$f(x) = x^2 - 5$

$g(x) = 4x - 4$

Finding $( f - g ) ( x )$:

$( f - g ) ( x )$ $= (x^2-5)-(4x-4) = x^2-4x-5+4$

$( f - g ) ( x ) = x^2-4x-1$

So, $( f - g ) ( 5 ) = (5)^2-4(5)-1 = 4$

Answer 2

Answer:

4

Step-by-step explanation:

f(x) = x^2 - 5

g(x) = 4x - 4

(f-g) (x)= x^2 - 5   - (4x - 4)

Distribute the minus sign

           = x^2 - 5   - 4x + 4

          = x^2 -4x-1

Let x = 5

(f-g) (5) = 5^2 -4(5) -1

            =25 - 20 -1

             =5-1

              =4