MathJax $TeX$ Test Page

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

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

$$left(egin{array}{cc}a & b\ c & cend{array} ight)$$

原文地址:https://www.cnblogs.com/wangshixi12/p/3240690.html