Question

3la puterea8 minus 3 la puterea 6 = x la puterea 3 , atunci x= cu

Answer 1

[tex] 3^{8}- 3^{6}= x^{3} \ \textless \ =\ \textgreater \ x=3 [/tex]

Answer 2

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