Question

1. Care dintre urmatoarele cifre sunt patrate perfect. De ce ?
64 ; 4 la puterea a 3 ; 5 la puterea a 3 ; 2 la puterea a 4 : 3 la puterea a 2

Answer 1

64 = 8*8 - patrat perfect
4 la puterea a 3 a = 4*4*4=64 = 8*8 - patrat perfect
5 la puterea a 3 a = 5*5*5=125
2 la puterea a 4 a = 2*2*2*2=16 = 4*4 - patrat perfect
3 la puterea a 2 a = 3*3=9 = 3*3- patrat perfect