TeXt - MathJax
When \(a \ne 0\), there are two solutions to \(ax^2 + bx + c = 0\) and they are
\[x_1 = {-b + \sqrt{b^2-4ac} \over 2a}\]
\[x_2 = {-b - \sqrt{b^2-4ac} \over 2a} \notag\]
TeXt - Mermaid
graph TB;
A[Do you have a problem in your life?]
B[Then don't worry]
C[Can you do something about it?]
A--no-->B;
A--yes-->C;
C--no-->B;
C--yes-->B;