Mathjax not working properly on back

I am using the Version ⁨2.1.43, and the Mathjax is not workin on the answer olny in the front. If there is a solution or I am doing something wrong explain pls.
edit

Hum that’s weird. How does the “raw” input look like? Focus the back field and press Ctrl+Shift+x (on Windows). Maybe you got some weird character in there not recognized my MathJax.

Btw, to make your front more pretty I can recommend \dots instead of “….”.

It is just the same
input

You’re using the ‘type in the answer’ notetype. If you want to see the answer normally, you’ll need to switch to the “Basic” notetype.