PreBuilt "Extract custom information from documents" is not capable of recognizing Mathematical Equations. It should have capability to recognize Mathematical Equations so that people from STEM (Science, Tech, Engineering, Mathematics) can use the model to process which contains Texts, Numbers, Equations in the same page.
Visit Youtube link of recreation of error.
Hello,
Currently, AI Builder does not support this scenario.
If you'd like, you're welcome to contribute your idea to our Power Apps Ideas community post.
You can find it here: Power Apps Ideas · Communit
Your input is valued and appreciated!
Thanks,
Samia