Answer:
None.
Step-by-step explanation:
The expression
[tex]\frac{x-4}{4-x}[/tex]
can be rewritten as
[tex]\frac{x-4}{-(x-4)}[/tex] (multiplying the denominator by -1)
and then it simplifies to
[tex]\frac{x-4}{-(x-4)}=-1[/tex]
which is just a constant, and is the same for every value of [tex]x[/tex]; therefore, the expression is undefined nowhere.
Answer: -4
Step-by-step explanation:
I answered none and got it wrong. Correct answer is -4
