Question

9 la puterea 2011; scrieti.l ca o suma de cuburi perfecte

Answer 1

$9^{2011}$ = 9*$9^{2011}$ =

= ($1^{3} + 2^{3}$)$( 3^{2} )^{3*670}$ =

= ($1^{3} + 2^{3}$)$( 3^{2*670} )^{3}$ =

= $( 3^{1340} )^{3} + (2* 3^{1340} )^{3}$