Question

Please help please i really need it​Click the attach image

Answer 1

Answer:

Domain: {-2, 1, 0, 2}

Step-by-step explanation:

You write it down as Domain: {-2, 1, 0, 2}

Here is an example of why:

https://study.com/academy/lesson/relation-in-math-definition-examples.html

You can watch that video and you will get a pretty good explanation.

Pretty much, you do not repeat numbers when you name the sets.

Answer 2

second one is correct :))

(-2, 1, 0, 2)