Réponses

2013-05-16T19:11:17+02:00

G=-(4x-3) + (5x-2)

   = -4x+3+5x-2

   = x+1

 

H= 2(3x-5) - 5 ( 12 - 4,5x )

   = 6x-10 -60+22.5x

   = 28.5x-70

2013-05-16T19:11:56+02:00

G = - (20x²-8x -15x+6)

= -20²+8x+15x-6

= -20x² +23x -6

 

H = 6x-10 -(60-22.5x)

H = 6x -10 -60+22.5x

= 28.5x -70