Bonjour j'ai besoin d'aide pour un devoir en mathématiques:
Ex 1
a) factoriser chaque expression
a)4x(au carré)+4 b) 8-2a c)5xy-10x
b) develloper puis reduire chaque expression:
A= -7(x-2) B=(4x+5) (x+3)
C= (9+x) (3x-1) D= (6x-2) (5x-3)


Merci d'avance :)
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