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angel151299
@angel151299
June 2021
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exercice 1
donner deux nombre dont le carre est 9
exercice 2
le racine carre de 64
exercice 3
calculer le perimetre d'un rectangle de cote 5 cm et 3 cm
exercice 4
factorise 25a² -25
exercice 5
developer (4+a)²
exercice 6
ecrire le calcul pour les 27%de 35kg
exercice 7
calculer les deux tiers de 27kg
exercice 8
donner deux nombre dont le carre est 25
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Julie74
1) 3²=9 et (-3)²=9
2) √64 = 8
3) 5+3+5+3= 16
4) 25a² - 25 = 25*a² - 25*1 = 25(a²-1)
5) (4+a)² = 4² + 2*4*a +a² = 16 + 8a +a²
6) 27% de 35 = (27*35)/100 = 9,45 ( à vérifier)
7) (2/3)*27 = 54/3 = 18
8) 5² = 25 ou (-5)²=25
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angel151299
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Je cherche le tier de 27kg2 sur 5 = 4 sur a je recherche a = ...ceci est une fraction merci avance
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Lista de comentários
2) √64 = 8
3) 5+3+5+3= 16
4) 25a² - 25 = 25*a² - 25*1 = 25(a²-1)
5) (4+a)² = 4² + 2*4*a +a² = 16 + 8a +a²
6) 27% de 35 = (27*35)/100 = 9,45 ( à vérifier)
7) (2/3)*27 = 54/3 = 18
8) 5² = 25 ou (-5)²=25