1) ( \frac{3^{15}}{3^{11}} = 3^{15-11} = 3^4 = 81 )
2) ( \frac{(3^4)^2}{3^6} = \frac{3^8}{3^6} = 3^{8-6} = 3^2 = 9 )
3) ( \frac{11^{11}}{11^{10}} \times 11 = 11^{11-10} \times 11 = 11 \times 11 = 121 )
1) ( \frac{3^{15}}{3^{11}} = 3^{15-11} = 3^4 = 81 )
2) ( \frac{(3^4)^2}{3^6} = \frac{3^8}{3^6} = 3^{8-6} = 3^2 = 9 )
3) ( \frac{11^{11}}{11^{10}} \times 11 = 11^{11-10} \times 11 = 11 \times 11 = 121 )