User:Sjoerd visscher

Maybe some day: Sjoerd Visscher

You've really made it when there is a wikipedia article about you that has a table of contents.

My site is here: w3future.com

$${ -b \pm \sqrt{b^2 - 4ac} \over 2a } = x_m \pm \sqrt{{x_m}^2 - {c \over a}}, x_m = {-b \over 2a}$$