Réponses

2014-02-27T11:49:41+01:00
Bonjour,

C = 17xy - 17
   = 17(xy - 1)

D = 5x²y - 5xy²
   = 5xy(x - y)
2014-02-27T12:17:00+01:00
C =17xy-17
= 17(xy-1)

D =5x²y-5xy²
= 5xy (x - y )

Au plaisir de t'avoir aidé