2-2

0

If you meant the arithmetic 2 − 2, the result is 0. It follows from the fact that subtracting a number from itself yields zero (2 − 2 = 0, or equivalently 2 + (−2) = 0).

If you intended a different problem (e.g., Chapter 2, Exercise 2, or a more complex expression), please share the full prompt and I’ll help step through it.