Réponses

2012-10-14T18:11:21+02:00

A = -32y^2+42y

 

 

B = -36x^2+24x+15x^2-10x

B= -21x^2-14x

 

 

C= -25a^2-16b^2

2012-10-14T18:24:45+02:00

A= -8y(4y-6)
A= -32y² + 48y
 
B= 12x²-5x(-3x+2)

B= 144x²-15x²+10x

B= 129x²+10x


C= (-5a-4b)(6a+4b)

C= -30a²-20ab-24ab-16b²

C= -30a²-16b²-44ab