Réponses

2013-04-03T15:36:48+02:00

A = 3√20 + √45

A = 3√4*√5 + √9*√5

A = 3*2*√5 + 3√5

A = 6√5 + 3√5

A = (6 + 3)√5

A = 9√5

2013-04-03T15:38:30+02:00
Pour le signe racine je mets /
A= 3/4x5 + /9x5
A= 3x 2 /5 + 3/5
A= 6/5 + 3/5
A= 9/5