Question

What’s the answer???(ONLY ANSWER IF YOU KNOW PLEASE)

Answer 1

Answer:

(-infinity, 1) ∪ (1,3) ∪ (3, +infinity)

Step-by-step explanation:

Here only the 2nd function, g(x) = x^2 - 4x + 3, affects the domain.  Recognizing that division by zero is undefined, we set g(x) = 0 anyway and solve for x:  x^2 - 4x + 3 = 0 = (x -3 )(x - 1) = 0.  Thus, x cannot have either value 3 or 1.  Using this info, we write the domain as follows:

(-infinity, 1) ∪ (1,3) ∪ (3, +infinity).  This is Answer #3.