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Mimine213
@Mimine213
May 2019
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Jai besoins de votre aide , merci
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Commentaires (6)
Verified answer
x² + 4 = 68
donc : x² = 68 - 4 = 64
donc : x = 8 ou -8
0 votes
Thanks 1
Mimine213
merci
loulakar
Verified answer
X^2 + 4 = 68
x^2 + 4 - 68 = 0
x^2 - 64 = 0
x^2 - (8)^2 = 0
(x - 8)(x + 8) = 0
x - 8 = 0 ou x + 8 = 0
x = 8 ou x = (-8)
1 votes
Thanks 1
MonsieurFirdown
c'est exactement ça
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Verified answer
x² + 4 = 68donc : x² = 68 - 4 = 64
donc : x = 8 ou -8
Verified answer
X^2 + 4 = 68x^2 + 4 - 68 = 0
x^2 - 64 = 0
x^2 - (8)^2 = 0
(x - 8)(x + 8) = 0
x - 8 = 0 ou x + 8 = 0
x = 8 ou x = (-8)