User:Sjoerd visscher

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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}