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

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