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Lolachazal
@Lolachazal
April 2019
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Résoudre l'équation x2(au carré) +1=5
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Omnes
Salut,
x² + 1 = 5
x² +1 - 5 = 0
x² - 4 = 0
(x+5)(x-5) = 0
x + 5 = 0
x = - 5
ou x-5= 0
x = 5
Bonne soirée !
1 votes
Thanks 1
Omnes
y'a pas de racines, il faut factoriser et résoudre.
Omnes
Pour info, a racine d'un nombre négatif n'existe pas (fin pas avant la TaleS, ou la STI2D). Donc non, ta méthode ne fonctionne pas ;)
Omnes
que chez toi alors ;)
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Lista de comentários
x² + 1 = 5
x² +1 - 5 = 0
x² - 4 = 0
(x+5)(x-5) = 0
x + 5 = 0
x = - 5
ou x-5= 0
x = 5
Bonne soirée !