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Kahienachouchou
@Kahienachouchou
April 2019
2
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Bonsoir je n'arrive pas à effectuer ce developpement le voici
(10x-4)²-(7x+9)²
merci d'avance
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maran310
(10x-4)² - (7x+9)²
100x² -80x +16 - [ 49x² +126x +81]
100x² -80x +16 -49x² -126x -81
51x² -206x -65
1 votes
Thanks 0
kahienachouchou
J'ai une question pourquoi 20 alors que 10² =100 ?
maran310
Désolé je me suis trompé.
Blondyulysse
(100X2 + 80X + 16) - ( 49X2 + 126X +81)
100X2 + 80X + 16 - 49X2 - 126X -81
51X2 - 46X - 65
0 votes
Thanks 0
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Bonjour jai un probleme a reosudre sil vous palit calculer la moyenne de Mathilde 3,9/4 3,1/4 14,5/20 26,0/40 merci d'avance
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Jai besoin d'aide en histoire s'il vous plait merci d'avance!
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Bonsoir jai vraiment besoin d'aide sil vous plait merci d'avance
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100x² -80x +16 - [ 49x² +126x +81]
100x² -80x +16 -49x² -126x -81
51x² -206x -65
100X2 + 80X + 16 - 49X2 - 126X -81
51X2 - 46X - 65