Answer:
see explanation
Step-by-step explanation:
f(x) = [tex]\frac{2x-5}{x-4}[/tex]
The denominator cannot equal zero as this would make f(x) undefined.
Equating the denominator to zero and solving gives the value that x cannot be
x - 4 = 0 ⇒ x = 4 ← excluded value
Domain is x ∈ R , x ≠ 4
