Image 1 is the textbook question and image 2 is the graph in question.
The answer key says that the domain is all real numbers. I thought that the domain is actually -2<x<2.
My question is, is the answer key incorrect in this case or am I wrong? I'm new to learning math as a hobby and I don't have anyone who can help me with math in life, hence why i'm here. Any assistance would be much appreciated.