Respuesta :
The restriction for this is that x ≠ 4. This is because 4 - 4 = 0, and you cannot divide by zero.
An alternative way of writing this (interval notation) is (-∞, 4)U(4, ∞).
Hope this helps!
An alternative way of writing this (interval notation) is (-∞, 4)U(4, ∞).
Hope this helps!