GeoGebra

(a-b)²=a²- 2ab +b²

저자:Daniel Mentrard

http://dmentrard.free.fr/GEOGEBRA/Maths/Export6/diffcarMD.html

http://dmentrard.free.fr/GEOGEBRA/Maths/Export6/diffcarMD.html

http://dmentrard.free.fr/GEOGEBRA/Maths/Export6/diffcarMD.html

http://dmentrard.free.fr/GEOGEBRA/Maths/Export6/diffcarMD.html

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