1. The user requested to generate an Excel sheet of the previous math problem explanation. 2. As an AI text-based assistant, I can provide the math explanation and LaTeX steps but cannot directly create or export Excel files. 3. However, you can copy the provided steps and paste them into an Excel sheet manually. 4. If you want, I can format the steps in a way that is easy to transfer into Excel cells. Please specify if you want the steps formatted for Excel or any other assistance.