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hind2203
@hind2203
June 2021
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devoir de mathematique 3eme
exercice 4 et 5
svp
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rosa1
Ab=7
(a+b)²-(a-b)²=((a+b)+(a-b))*((a+b)-(a-b))
=(a+b+a-b)(a+b-a+b)
2aX2b=4ab=4X7=28
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bonjour j 'ai un devoir ke j arrive pa a faire je vous demande pa de le faire mes de m'aider parce-que pour l'introduction je c'est pas commen m'y prendre.merci beaucoup.(devoir de 3eme)
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(a+b)²-(a-b)²=((a+b)+(a-b))*((a+b)-(a-b))
=(a+b+a-b)(a+b-a+b)
2aX2b=4ab=4X7=28