Copy the formulas in ChatGPT response to word, simply 3 steps:
For the first step, you will need Selection Copilot, a Chrome Extension. Install the extension and use its copy as markdown in the context menu to copy formulas in ChatGPT (or Gemini, Claude, Qwen, Deepseek, Poe, …).

Second step, paste what you copied to Word. Select a formula and click the equation in Insert tab, you will enter math editor.

Third step, in the math editor (equation) tab, select LaTeX and click Convert (Current - Professional).

You will get the formula rendered, all set!