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3^-5 *3¹¹ supra lu 9²

Răspuns :

[tex]\frac{3^{-5}*3^{11}}{9^2}=\frac{3^{11}}{3^5*(3^2)^2}=\frac{3^{11}}{3^9}=3^{11-9}=3^2=9[/tex]