Réponses

Meilleure réponse !
2014-10-29T10:39:23+01:00
(2/3)²+ 2 X 2/3 -3
= 4/9 +4/3 - 3
= 4/9 + 12/9 - 27/9
= -11/9

2014-10-29T10:41:38+01:00
(2/3)^2 + 2 x 2/3 - 3
(2/3)(2/3)×2+4/3-3
4/9 ×2+4/3-9/3
8/9+(-5/3)
24/27-45/27
-21/27