Final answer:
The domain of the function is all real numbers except x = -5 and x = 5.
Step-by-step explanation:
The domain of a function is the set of all possible input values (x-values) for which the function is defined. In this case, we need to find the values of x that make the denominator (x² - 25) non-zero, since division by zero is undefined.
So, we set the denominator equal to zero and solve for x:
x² - 25 = 0
(x + 5)(x - 5) = 0
x = -5, 5
Hence, the domain of the function is all real numbers except x = -5 and x = 5.