7⁶= (7²)³=49³
5³
64=(2²)³= 4³
28= 2*2*7 nu este cub
1000=10³
13⁷ = (13⁵)³ *13² nu este cub
2×3²+3²= 3²*(2+1)=3²*3=3³
3⁶ +7*3⁸= 3⁶*(1+7*3²)=3⁶*(1+7*9)= 3⁶*(1+63)= 3⁶*64= (3²)³*4³= 9³*4³=36³
2³+2²×3²+6×3²+3³=2³+3²*(2²+6+3)= 2³+3²*(4+6+3)=2³+3²*13=8+9*13=
=8+117=125=5*5*5=5³
7³ⁿ =( 7ⁿ)³