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1. Fmath 

MathML (base64):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

 

 


2. Soo_Equation


3. MathJax

 

When $a \ne 0$, there are two solutions to \(ax^2 + bx + c = 0\) and they are
$$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$