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Silent
@Silent
June 2021
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[DÉVELOPPER] Bonsoir, j'aimerais avoir de l'aide pour développer les deux expressions.
Je vous remercie d'avance.
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winner123
Verified answer
J'en fais une pour l'exemple, tu feras l'autre
A ) (4 x - 20) ( x +1) - (2 x² - 50)
A) 4 x² - 4 x - 20 x -20 - 2 x² + 50
A = 2 x² - 24 x + 30
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victoriaotng
B= 2(x-4)(x-3)-(x²-6x+9)
= 2(x²-3x-4x+12)-(x²-6x+9)
= 2x²-6x-8x+12-x²+6x-9
= x²-8x+3
(toujours vérifier car il est possible qu'on se trompe en écrivant )
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Verified answer
J'en fais une pour l'exemple, tu feras l'autreA ) (4 x - 20) ( x +1) - (2 x² - 50)
A) 4 x² - 4 x - 20 x -20 - 2 x² + 50
A = 2 x² - 24 x + 30
B= 2(x-4)(x-3)-(x²-6x+9)
= 2(x²-3x-4x+12)-(x²-6x+9)
= 2x²-6x-8x+12-x²+6x-9
= x²-8x+3
(toujours vérifier car il est possible qu'on se trompe en écrivant )