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

What’s the answer???(ONLY ANSWER IF YOU KNOW PLEASE)-example-1
User Pobrelkey
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1 Answer

3 votes

Answer:

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

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.

User MrHen
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