Răspuns :
3^8-3^6=x^3
3^6(3^2-1)=x^3
3^6 . 2^3=x^3
(3^2)^3 . 2^3=x^3
(3^2 . 2)^3= x^3
18^3=x^3
x=18
[tex] [/tex]
3^6(3^2-1)=x^3
3^6 . 2^3=x^3
(3^2)^3 . 2^3=x^3
(3^2 . 2)^3= x^3
18^3=x^3
x=18
[tex] [/tex]