Perhaps first ask for the answer in the way you feel is most accurate, and let it translate to markdown in a second step?

What's difference between \usepackage{palatino} and \usepackage{newpxtext} I want to use the Palatino font without changing the math font, and it seems to me that both \usepackage{palatino} and \usepackage{newpxtext} give the same result. Can I use either?

This is somewhat niche, but since we’re on the topic of fonts, you may want to consider upgrading to \usepackage{newpxtext} and, if desired, \usepackage{newpxmath},
see tex.stackexchange.com/a/517631