Réponses

2014-09-24T15:41:39+02:00
Réduire : 
A = 2x - 5x = -3x
B = 1 + 4t - 2 - t = 3t - 1
C = 2 - ( 3 + 4x) = 2 - 3 - 4x = -4x - 1
D =x - 1  - (2x - 3) = x - 1 - 2x + 3 = -x + 1

Développer : 
A =  2(x - 4) = 2x - 8
B = -3(2x - 1) = - 6x + 3
C = 4 (4 - 3t) = 16 - 12t