Editing User:Bamboo3250
Revision as of 19:10, 29 September 2009 by Bamboo3250 (talk | contribs) (New page: Etou... Công thức nghiệm phương trình bậc hai: ax²+bx+c=0 (a≠0) x1=(-b+√Δ)/2a x2=(-b-√Δ)/2a Với: Δ=b²-4ac {----------------------------------...)
Warning: You are editing an out-of-date revision of this page. If you save it, any changes made since this revision will be lost.
Warning: The database has been locked for maintenance, so you will not be able to save your edits right now. You may wish to copy and paste your text into a text file and save it for later.
The system administrator who locked it offered this explanation: Server maintenance. It'll take some time, it is not possible to edit the wiki.