Just wanted to point out that this is not friendly for beginners. A beginner will be lost between a lot of "\frac"s and "{}"s (I don't know the name in English, sorry). Been there
The problem is that this is a really tiny subset of what you can write with LaTeX, even for high school students it won't be enough. I'd much rather use something like https://www.codecogs.com/latex/eqneditor.php as a beginner.
