http://math4allages.wordpress.com/2009/12/18/derivation-of-the-quadratic-formula/

You may want to check it out.

Dave, believes you would be glad with this link that related to application of the quadratic formula, especially for solving ODE.

http://chanheeh.wordpress.com/2008/12/02/two-types-of-quadratic-formula/

My special sallom for you Dave..

Denaya Lesa.

Your math blog would be interested if Denaya completes with the following link

http://dreamofdestiny.wordpress.com/2008/12/31/pythagorean-triple-part-0/,

that discussed Pythagoras formula and several advanced applications. See also another related link at my address.

See you later,
Denaya Lesa.

Now, Denaya adds your math blog with a new link contains my challenges that have been posted at:

http://totient.wordpress.com/2008/03/19/a-funny-derivation/#comment-21

Denaya hopes the challenge could be inspired all of visitors here. Thx.

Thank’s so much Dave, I’ve just seen the list of top clicks on this wonderful math blog.

Congratulation Dave, your math blog now worldwild.

Happy with you,
Denaya Lesa.

Apologise, Denaya also links your math blogs

http://trevorpythag.wordpress.com/2009/01/28/derive-quadratic-formula/

and

http://metrostateatheists.wordpress.com/2008/12/16/differential-equations-how-they-relate-to-calculus/

to

http://arubi.wordpress.com/2008/12/24/kunjungan-masyarakat-nanoteknologi-indonesia-ke-lembaga-nanoteknologi-jerman/#comment-23

Thx.
Denaya Lesa.

Oh yeah, Denaya forgets to inform you if recently ardoris.wordpress.com becomes top clicks on http://arubi.wordpress.com one of blog at Germany. If you have any spare time, please visit to the website.Thx.

Maybe before I give my special answer for you, let’s read Eric’s comment about our posts:

%%
Greetings! I posed your problem to a friend of mine and he came up with this. What do you think?
%%

Eric is visitor of oxford maths interview 2009 on http://ardoris.wordpress.com/2008/12/19/oxford-maths-interview-2009/

Happy with you @Metro State Atheists.

Denaya Lesa.