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Collège El Massira - T'issa- 2 Année collège Année scolaire : 2018/2019 Devoir Surveillé n° 2 Prof: ANAAM Mohammed Semestre 1 MATHEMATIQUES Exercicel : Calculer et simplifier les expressions suivantes : - 7 15 -6 2 A= B= 321 5 X 툕 1p*5 7 3 25. D E = 1. = 6 Exercice 2: 1) Calculer : -3 0.5p*4 2019° : (-1)101 010 () 2) Déterminer le signe des puissances suivantes : 0.5p*2 G)* (-7)2018 3) Ecrire sous forme " les enressione suivantes : ...
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