Réponses

2013-05-19T22:16:11+02:00
2013-05-19T22:22:21+02:00

Z=4(x+3(X+2(x+1))) 

 

Z = 4x +12 (x+2( x +1))

 

Z= 4x +12x +24 ( x+1)

 

Z = 16x  +24x + 24

 

Z=  40x +24

 

ou

 

Z=4(x+3(X+2(x+1))

 

Z= 4( x +3( x +2x 2))

 

Z= 4( x +3 (3x + 2)

 

Z= 4( x +9x +6)

 

Z= 4(10x +6)

 

Z= 40x + 24