Answer:
{-5-2*x^2-(-15)=0}
Step-by-step explanation:
That's the answer i believe??
Answer:

Step-by-step explanation:
We are given f(x) and g(x)
1. (f+g)(x)
(f+g)(x) = f(x) + g(x)
= 
= 
Domain : All real numbers as it there exists a value of (f+g)(x) f every x .
2. (f-g)(x)
(f-g)(x) = f(x)-g(x)
= 
=
Domain : All real numbers as it there exists a value of (f-g)(x) f every x .
Part 3 .

Domain : In this case we see that the function is not defined for values of x for which the denominator becomes 0 or less than zero . Hence only those values of x are defined for which

or 
Hence taking square roots on both sides and solving inequality we get.

Answer:
7.875
Step-by-step explanation: