Question

(-∞;-4)∪(-4;2)∪(2;+∞)

Answer 1

А что тут делать то надо

Answer 2

The set you've written, (-∞, -4) ∪ (-4, 2) ∪ (2, +∞), represents a union of three intervals on the real number line.

1. (-∞, -4): This interval includes all real numbers less than -4, but does not include -4 itself.
2. (-4, 2): This interval includes all real numbers greater than -4 and less than 2, but it does not include -4 and 2 themselves.
3. (2, +∞): This interval includes all real numbers greater than 2.

So, the union of these three intervals represents the set of all real numbers that are either less than -4, between -4 and 2, or greater than 2. In set notation:

(-∞, -4) ∪ (-4, 2) ∪ (2, +∞) = {x | x < -4 or -4 < x < 2 or x > 2}