Réponses

  • Utilisateur Brainly
2014-04-13T16:43:16+02:00
Calculer (5+(-2)+4)×(5+(-2)+4)-49
 =(5+2) x (5+2) -49
=7x7-49
=0
2014-04-13T16:45:02+02:00
 (5+(-2)+4)×(5+(-2)+4)-49
( 5-2+4) x ( 5-2+4) -49
(7x7)-49
49-49
0