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Factoring difference of squares http://www.khanacademy.org/video/factoring-difference-of-squares ------------------------ يتناول هذا الفيديو مسألة لتحليل الفرق بين مربعين ------------------------ شكر خاص لمؤسسة شركاء في التنمية المستدامة -- فلسطين http://psdpal.org