Answer:




Explanation:
Given


See attachment
Solving (a): (g + f)(2)
This is calculated as:

Calculate g(2) and f(2)


So:


Solving (b):

This is calculated as:

Calculate f(-1) and g(-1)

So:



Solving (c): (g - f)(-1)
This is calculated as:

Calculate g(-1) and f(-1)


So:



Solving (d): (g * f)(2)
This is calculated as:

Calculate g(2) and f(2)


So:


