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User:Ppetru

Hello. I'm a newbie Wikipedian from Romania. You can contact me through email at petru@paler.net

Some of the articles I worked on are:

I'm also interested in improving Wikipedia:PHP script

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... + 2xy + y2. Since "2xy" in this case is (b/a)x, we must have y = b/(2a), so we add the square of b/(2a) to both sides, ...