2-2

Could you clarify what you mean by "2-2"? Here are two likely possibilities:

• If you mean the arithmetic expression: 2 − 2 = 0.
• If you’re referring to exercise 2.2 in a textbook or a problem set: please share the problem statement or subject (e.g., algebra, calculus, statistics). I can walk you through the solution.

If you want, you can paste the exact wording of the 2-2 problem and I’ll help solve it step by step.