Let's test math with #LaTeX :
When \(a \ne 0\), there are two solutions to \(ax^2 + bx + c = 0\) and they are
\[x = {-b \pm \sqrt{b^2-4ac} \over 2a}.\]

@freemo , I think it's something wrong with #mathjax on @QOTO .
The post above doesn't show up as it should compared with [this](https://jsbin.com/?html=%3C!DOCTYPE%20html%3E%0A%3Chtml%3E%0A%3Chead%3E%0A%20%20%3Cmeta%20charset%3D%22utf-8%22%3E%0A%20%20%3Cmeta%20name%3D%22viewport%22%20content%3D%22width%3Ddevice-width%22%3E%0A%20%20%3Ctitle%3EMathJax%20example%3C%2Ftitle%3E%0A%20%20%3Cscript%20src%3D%22https%3A%2F%2Fpolyfill.io%2Fv3%2Fpolyfill.min.js%3Ffeatures%3Des6%22%3E%3C%2Fscript%3E%0A%20%20%3Cscript%20id%3D%22MathJax-script%22%20async%0A%20%20%20%20%20%20%20%20%20%20src%3D%22https%3A%2F%2Fcdn.jsdelivr.net%2Fnpm%2Fmathjax%403.0.1%2Fes5%2Ftex-mml-chtml.js%22%3E%0A%20%20%3C%2Fscript%3E%0A%3C%2Fhead%3E%0A%3Cbody%3E%0A%3Cp%3E%0A%20%20When%20%5C(a%20%5Cne%200%5C)%2C%20there%20are%20two%20solutions%20to%20%5C(ax%5E2%20%2B%20bx%20%2B%20c%20%3D%200%5C)%20and%20they%20are%0A%20%20%5C%5Bx%20%3D%20%7B-b%20%5Cpm%20%5Csqrt%7Bb%5E2-4ac%7D%20%5Cover%202a%7D.%5C%5D%0A%3C%2Fp%3E%0A%3C%2Fbody%3E%0A%3C%2Fhtml%3E&live)
Please help.
#qotohelp