9.1 1)
3 5
−
4 5
!
=
r3
5
2
+−
4 5
2
=q259 + 1625 =q2525 =√ 1 = 1
2)
−
1
√5
6
√45
=
r
−
1
√5
2
+√6452 =q15 + 3645 =q15 +45 =q55 =
=√ 1 = 1
3)
2 3
−
1 3
−
2 3
=
r2
3
2
+−
1 3
2
+−
2 3
2
=q49 +19 + 49 =q99 =√ 1 = 1
Géométrie : norme Corrigé 9.1