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Lipinha
@Lipinha
April 2019
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Resoudre l'equation x2-1=0
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Verified answer
Équation :
x²-1=0
(x-1)(x+1)=0
x=-1 ; x=1
0 votes
Thanks 1
AhmedChahid
Verified answer
On a : x au carre -1= 0
donc: x au carre - 1 au carre = 0
(x-1)(x+1) = 0
x-1= 0 ou x+1= 0
x=1 x=-1
donc l’équation a deux solutions sont :
x₁=1 et x
₂= -1
1 votes
Thanks 1
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Verified answer
Équation :x²-1=0
(x-1)(x+1)=0
x=-1 ; x=1
Verified answer
On a : x au carre -1= 0donc: x au carre - 1 au carre = 0
(x-1)(x+1) = 0
x-1= 0 ou x+1= 0
x=1 x=-1
donc l’équation a deux solutions sont :
x₁=1 et x₂= -1