Răspuns :
[tex] \frac{18* 9^{5} }{ 3^{12} } =\frac{18* 3^{10} }{3^{12} }= \frac{18}{ 3^{2} }= \frac{18}{9}= 2 [/tex]
[tex] \frac{18*9^5}{3^{12}}= \frac{18*3^{10}}{3^{12}} \frac{18}{3^2}= \frac{18}{9} =\bold{2}[/tex]
