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Elsa170
@Elsa170
April 2019
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Exercice 49 .. Merci de m'aider
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winner123
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Bonsoir
G = ( 2 x -1)² + ( 2 x-1) ( 3 x + 5)
G = 4 x² - 4 x + 1 + 6 x² + 10 x - 3 x -5
G = 10 x² - 7 x - 4
G = ( 2 x - 1) ( 2 x - 1 + 3 x + 5)
G = ( 2 x -1) ( 5 x + 4)
G = 0
soit 2 x - 1 = 0
2 x = 1 et x = 1/2
soit 5 x + 4 = 0
5 x = - 4
x = - 4/5
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Verified answer
BonsoirG = ( 2 x -1)² + ( 2 x-1) ( 3 x + 5)
G = 4 x² - 4 x + 1 + 6 x² + 10 x - 3 x -5
G = 10 x² - 7 x - 4
G = ( 2 x - 1) ( 2 x - 1 + 3 x + 5)
G = ( 2 x -1) ( 5 x + 4)
G = 0
soit 2 x - 1 = 0
2 x = 1 et x = 1/2
soit 5 x + 4 = 0
5 x = - 4
x = - 4/5