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(a+b)²-(a-b)²= 4ab

Author:Daniel Mentrard
Topic:Algebra, Geometry, Plane Figures or Shapes

http://dmentrard.free.fr/GEOGEBRA/Maths/Export5/4abMD.html

http://dmentrard.free.fr/GEOGEBRA/Maths/Export5/4abMD.html
http://dmentrard.free.fr/GEOGEBRA/Maths/Export5/4abMD.html

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