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Marocaine280
@Marocaine280
May 2019
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Bonjour, pouvez vous m'aider pour cet exercice de maths:
Écris chaque nombre sous la forme de a^n où n est un nombre entier et négatif.
a) 1/8
b) -(1/8)
c)4/9
d)9/4
Merci d'avance
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Odysseus
(a) 1/8 = 1/2^3 = 2^-3
(b) -1/8 = 1/(-2)^3= (-2)^-3
(c) 4/9 = (2/3)^2 = (3/2) ^(-2)
(d) 9/4 = (3/2)² = (2/3)^(-2)
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Marocaine280
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(b) -1/8 = 1/(-2)^3= (-2)^-3
(c) 4/9 = (2/3)^2 = (3/2) ^(-2)
(d) 9/4 = (3/2)² = (2/3)^(-2)