Merci d’avance Developper: A=(-3x²+6x)(-3x²+2x+1) Factoriser: B=25x3 + 5x² - 15x C=49x² - 28x + 4 D=(3x+7)²(x+2) + (3x+7)(5x+4)
Mathématiques
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Question
Merci d’avance
Developper:
A=(-3x²+6x)(-3x²+2x+1)
Factoriser:
B=25x3 + 5x² - 15x
C=49x² - 28x + 4
D=(3x+7)²(x+2) + (3x+7)(5x+4)
Developper:
A=(-3x²+6x)(-3x²+2x+1)
Factoriser:
B=25x3 + 5x² - 15x
C=49x² - 28x + 4
D=(3x+7)²(x+2) + (3x+7)(5x+4)
1 Réponse
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1. Réponse romane1638
Réponse:
A=9x⁴-6x³-3x²-18x³+12x²+6x= 9x⁴-24x³+9x²+6x
B=5x(5x²+x-3)
C=(7x-2)²
D=(3x+7)((3x+7)×(x+2)+5x+4)=(3x+7)(3x²+6x+7x+14+5x+4)=
(3x+7)(3x²+18x+18)