Answer:
A:x=3
B:x=-4
Explanation:
The domain is set of all values of x for which the given rational function is defined.
The rational equation is

The rational function will not be defined if the denominator is zero.
That is if:
1.

2.

This implies that x=3 or x =-4
Therefore the equation is defined on all real values of x, except x=3 or-4