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Emaide1
@Emaide1
May 2019
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Bonjour, j'ai un devoir à rendre pour lundi (niveau 4e) mais je n'y arrive pas.. Voici l'énoncé : (exercice 2: 3) )
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Bonjour
Factorisation
d = 6 ( 2 a - 3)
e = a ( a - 5)
f = 2 a ( a - 3 )
g = 7 a ( 3 a - 1 )
développement
je te montre le premier et ensuite tu fais
H = x² + 4 x + 7 x + 28 =
x² + 11 x + 28
L = 3 x² - 4 x + 6
pour x = 4
L = 3 (4)²- 4 (4) + 6 = 48 - 16 + 6 = 38
tu fais pour l'autre valeur
numéro 3
x + 4 = 0 .5 x - 2
x - 0.5 x = - 2 - 4
0.5 x = - 6
x = 12
ton nombre est 12
1 votes
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Bonsoir, comment se nomme la "famille" des ordinateurs/tablettes/smartphones etc ?
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Factorisation
d = 6 ( 2 a - 3)
e = a ( a - 5)
f = 2 a ( a - 3 )
g = 7 a ( 3 a - 1 )
développement
je te montre le premier et ensuite tu fais
H = x² + 4 x + 7 x + 28 = x² + 11 x + 28
L = 3 x² - 4 x + 6
pour x = 4
L = 3 (4)²- 4 (4) + 6 = 48 - 16 + 6 = 38
tu fais pour l'autre valeur
numéro 3
x + 4 = 0 .5 x - 2
x - 0.5 x = - 2 - 4
0.5 x = - 6
x = 12
ton nombre est 12