Bonjour,
je suis actuellement en classe de quatrième.


Voici mon devoir :

Réduire les expressions qui suivent;
A=5y-4+7y-8y+6

B=-4z+5-2z²+y-8z²-3z-11

C=-3r+5-7r+2r-6r-6

D=4t-5+6t²+4-2t²-t+t²-7t

Merci, Asckobly. ω
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