2-2

I’m not sure what you mean by “2-2.” Do you mean problem 2.2 from your notes/textbook, or the arithmetic 2 − 2? Could you share the exact problem statement or the subject/course and the book you’re using? If you just want the arithmetic: 2 − 2 = 0. If you provide the problem statement, I’ll give a step-by-step solution and a brief explanation to help you study. Also I can tailor a quick 2-2 problem set or a short cheatsheet for that topic.