salut
racine(a/b) = racine(a)/racine(b)
a) racine(1/16)= racine(1)/racine(16)= 1/4
b) racine(1/444)= racine(1)/racine(144)= 1/12
c) racine(9/25)= racine(9)/racine(25)= 3/5
d) racine(121/36)= racine(121)/racine(36)= 11/6
e) racine(81/10000)= racine(81)/racine(10000)= 9/100