Firstly, you want to multiply (f^4)^2. 
Next, multiply everything on the numerator. 
Next, divide. 
Now remember that f^-2 = (1/f^2), so just convert the negative powered exponent to that, and your answer will be 
It’s obvious. X Delmar practiced more
The domain of a function is the set of all possible x-values which will make the function “work”, and will output real
y-values