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Gitifo64
@Gitifo64
May 2019
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Salut, j'ai besoin d'aide pour un devoir de Maths, merci d'avance pour les réponses.
Développer et réduire les expressions suivantes.
A= 5(a+2) - (6a-7)
B= -b (3b+7) + (5-b) * b
C= -c (4+3c) - (9-2c+6c²)
D= -5d + 5d(d-2) -6(7-3d)
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swnn
Verified answer
A = 5a+10-6a+7 = -a+17
B = -3b²-7b+5b-b² = -4b²-2b
C = -4c-3c²-9+2c-6c² = -9c²-2c+9
D = -5d+5d²-10d-42+18d = 5d²+3d-42
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Verified answer
A = 5a+10-6a+7 = -a+17B = -3b²-7b+5b-b² = -4b²-2b
C = -4c-3c²-9+2c-6c² = -9c²-2c+9
D = -5d+5d²-10d-42+18d = 5d²+3d-42