Réponses

  • Utilisateur Brainly
2014-05-25T19:41:16+02:00
(12√7 * 5√7) / 2 =
(12*5*V7*V7)/2 =
420/2  =210
2014-05-25T19:43:27+02:00
(12√7*5√7)/2
= (12*5*√7*√7)/2
= (12*5*7)/2
= 6*5*7
= 210