2-4

If you meant the arithmetic: 2 − 4 = -2.

If you meant something else, please clarify. For example:

• Problems 2–4 in a worksheet: paste the problems or the topic and I’ll solve them step by step.
• Interval notation like [2,4]: tell me what you need to do (e.g., find length, endpoints, etc.).
• A range of topics (sections 2–4 in a course): tell me the subject (algebra, calculus, statistics) and I’ll summarize and practice problems.

What would you like to do?