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lullem12
@lullem12
May 2022
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Besoin d'aide : 2 factorisations niveau 3eme, merci :)
A factoriser :
A= (7x - 2)² (5x - 6) (7x - 2)
B= (2x - 5) (x+10) + (2x - 5)²
Merci !
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diloufathe
il n'y a pas un signe qui manque dans l'équation A?
0 votes
Thanks 0
lullem12
si, pardon, c'est un moins
diloufathe
C'est bizarre après avoir commenter je ne peux plus t'envoyer la solution
diloufathe
commenté*
diloufathe
A=(7x-2)2 -(5x-6)(7x-2)=(7x-2)[(7x-2)-(5x-6)]=(7x-2)(7x-2-5x+6)= (7x-2)(2x+4)=2(7x-2)(x+2)
diloufathe
B=(2x-5)(x+10 +2x-5)= (2x-5)(3x +5)
lullem12
en fait tu a répondu en comentant....
lullem12
Et tout cas, merci beaucoup !!
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