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kiwimiams
@kiwimiams
January 2021
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Bonjours j'aurai un question vous savez à quoi correspond les signe mathématique avant le 25 et le 5 merci
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loulakar
Verified answer
Bonjour,
(x - 2,5)² = 25
(x - 2,5) = ±√25
Cela veut dire qu’il y a deux solutions possibles, soit +√25 soit -√25
Le signe veut dire racine
√25 = 5
x - 2,5 = ± 5
Veut dire que :
x - 2,5 = 5 ou x - 2,5 = -5
x = 5 + 2,5 ou x = -5 + 2,5
x = 7,5 ou x = -2,5
1 votes
Thanks 1
kiwimiams
Ha OK merci beaucoup
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Verified answer
Bonjour,(x - 2,5)² = 25
(x - 2,5) = ±√25
Cela veut dire qu’il y a deux solutions possibles, soit +√25 soit -√25
Le signe veut dire racine
√25 = 5
x - 2,5 = ± 5
Veut dire que :
x - 2,5 = 5 ou x - 2,5 = -5
x = 5 + 2,5 ou x = -5 + 2,5
x = 7,5 ou x = -2,5