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Lolbel90
@Lolbel90
April 2019
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Voici deux expressions :
A = 2x(puissances 3) - 7x² + 6
B = 5x(puissances 4) + 6x - 7
Calcule A et B :
a. pour x = 3
b. pour x = -5
c. pour x = 0.2
d. pour x = 0
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geekkhalil
Salut :)
a. pour x = 3
A = 2x³ - 7x² + 6
alors
A = 2×3³ - 7×3² + 6
A = (-3)
B = 5x⁴+ 6x - 7
alors
B = 5×3⁴+6×3-7
B = 416
b. pour x = -5
A = 2×5³ - 7×5² + 6
A = 81
B = 5×5⁴+6×5-7
B = 3148
6 votes
Thanks 8
geekkhalil
est ce que c'est vrai
Lolbel90
Oui, merci :)
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Lista de comentários
a. pour x = 3
A = 2x³ - 7x² + 6
alors
A = 2×3³ - 7×3² + 6
A = (-3)
B = 5x⁴+ 6x - 7
alors
B = 5×3⁴+6×3-7
B = 416
b. pour x = -5
A = 2×5³ - 7×5² + 6
A = 81
B = 5×5⁴+6×5-7
B = 3148