Réponses

2014-01-27T17:30:30+01:00
A = xy -y + x - 1 = xy + (x-y) -1 = 4 - 8,5 - 1 = -5,5
B = xy + 4y - 4x - 16 = xy - 4(x-y) - 16 = 4 - 34 - 16 =  -46
c = 4xy - 2x + 2y - 1 = 4xy + 2(x-y) - 1 = 16 + 17 - 1 = 32

pourrez tu m'aider a mon exercice de maths que jai poster svp
2014-01-27T17:34:48+01:00
A = xy -y + x - 1 = xy + (x-y) -1 = 4 - 8,5 - 1 = -5,5
B = xy + 4y - 4x - 16 = xy - 4(x-y) - 16 = 4 - 34 - 16 =  -46
c = 4xy - 2x + 2y - 1 = 4xy + 2(x-y) - 1 = 16 + 17 - 1 = 32