Simplifiez $\dfrac{\dfrac{8^{8}}{8^{4}}}{\dfrac{8^{11}}{8^{12}}}$=

Simplifiez $\dfrac{\dfrac{11^{-5}}{11^{7}}}{\dfrac{11^{12}}{11^{-1}}}$=

Simplifiez $\bigg(\dfrac{11^{12}\times11^{3}}{11^{6}}\bigg)^{-4}$=

Simplifiez $\bigg(\dfrac{6^{12}\times6^{-10}}{6^{4}}\bigg)^{3}$=

Simplifiez $\dfrac{\bigg(2^{-8}\bigg)^{3}\times2^{-12}}{2^{-9}}$=

Simplifiez $8^{7}\times\dfrac{\sqrt{8}^{-10}}{8^{12}}$=

Simplifiez $11^{9}\times\dfrac{\sqrt{11}^{-4}}{11^{6}}$=

Simplifiez $\bigg(\dfrac{7^{-8}\times\sqrt{7}^{-6}}{7^{-10}}\bigg)^{2}$=

Simplifiez $\bigg(\dfrac{7^{4}\times\sqrt{7}^{2}}{7^{11}}\bigg)^{2}$=

Simplifiez $\dfrac{\dfrac{4^{-9}}{4^{-10}}}{\dfrac{4^{-7}}{4^{11}}}$=