Equation editor by Chungkwong Chan

Equation editor by Chungkwong Chan

x = \frac{- b \pm \sqrt{b^{2} - 4 a c}}{2 a}

LaTeX:

x=\frac{-b\pm \sqrt{b^{2}-4ac}}{2a}

MathML:

<mrow><mi>x</mi><mo>=</mo><mfrac><mrow><mo>-</mo><mi>b</mi><mo>±</mo><msqrt><mrow><msup><mrow><mi>b</mi></mrow><mrow><mn>2</mn></mrow></msup><mo>-</mo><mn>4</mn><mi>a</mi><mi>c</mi></mrow></msqrt></mrow><mrow><mn>2</mn><mi>a</mi></mrow></mfrac></mrow>

This is a free software. Source code is available at GitHub.