anamethatisnt

I guess you've already done updates on your packages in termux?

Updating:
pkg upgrade
ani-cli -U

I see that ani-cli prefer to use yt-dlp to ffmpeg if it's available so you could try installing that too.

Now I want an explanation of wildlife rescue and the stuff in the image.

I never ran into PEMDAS while growing up, in Sweden I've always been taught of it as the following order of operations:

1. P
2. E & Roots
3. M & D
4. A & S

And even if you don't simplify it to y the end result is the same
2+x(y-z) = 2+xy-xz