Répondre :

A = 840/1680 = 1/3 B = 490/840 = 7/12 C = 25/18
Exo 2 A=1/2 B=7/12 C=25/18 D=40/9 E=63/10 F=18/7 G=20/9 H=7/48 Exo5 A= 18x^2 -36x B= -x^2+3x C= ? D= -32x^2 -40x E= 14x^2 -63x F= 99x+60 G= -100x^2 +70x H = ?

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