Thread:Project:Support desk/extension MathJax math formula not displayed

I work with mediawiki 1.23 and the extension MathJax is installed and required into my local setting

In one page is written this formula ː blabla....... \[(a+b)^3=(a+b)(a+b)^2\] blabla...

OK ː If I am connect as wikiSysop the display is correct (about 3 lines as       blabla.....               the formula with the correct exposant in the middle of the line        blabla.....

NOK ː if I am not connected (anonymous) or connect as another user (chantoune) The display shows the syntax as written when I am in page edit

To solve this NOK case ː I have to install also the Extension Math (1465 files ǃǃadd ) and just add the line requiring Math in my local setting (no texvc compilation and so on.....)

So now, when I am not connected or connected as chantoune ː the display is correct (3 lines)

Is there a more simple solution ?

with for instance a specific $wgGroupPermissions['*'] to set ?

Why when I am wikiSysop connected, the extension Math is not mandatory to have a correct display ?

and why is it mandatory in other case ?