1. The user asked to shorten the previous explanation. 2. Since no specific math problem was given, I will provide a brief, clear summary. 3. In math explanations, the goal is to state the problem, show formulas, explain steps clearly, and provide the final answer. 4. Shortening means using simpler language and fewer steps while keeping the key points. 5. For example, instead of detailed factorization, just show the main simplification step. 6. This helps learners grasp the concept quickly without losing understanding.