Răspuns:
a) 4/25 = 2/5 la puterea a doua
b) 8/125 = 2/5 la puterea a treia
c) 16/625 = 2/5 la puterea a patra
d) 2*8/25*25=16/625 =2/5 la puterea a patra
e) 1=/= 2/5
f) 4/10 (simplificam cu 2) = 2/5
