TEX example

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

HTML example

When a≠0 $a \neq 0$ , there are two solutions to ax2+bx+c=0 $a x^{2} + b x + c = 0$ and they are

x = - b \pm b 2 - 4 a c - - - - - - - \sqrt 2 a .

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

When `a != 0`, there are two solutions to `ax^2 + bx + c = 0` and they are

`x = (-b +- sqrt(b^2-4ac))/(2a) .`