Simplifiez $\bigg(\dfrac{5^{8}\times5^{-5}}{5^{3}}\bigg)^{2}$=

Simplifiez $9^{2}\times\dfrac{\sqrt{9}^{-8}}{9^{-20}}$=

Simplifiez $6^{2}\times\dfrac{\sqrt{6}^{-8}}{6^{-20}}$=

Simplifiez $\dfrac{\dfrac{7^{11}}{7^{5}}}{\dfrac{7^{-10}}{7^{-6}}}$=

Simplifiez $\dfrac{\dfrac{10^{-6}}{10^{-3}}}{\dfrac{10^{-2}}{10^{-11}}}$=

Simplifiez $7^{-1}\times\dfrac{\sqrt{7}^{6}}{7^{-10}}$=

Simplifiez $\dfrac{\dfrac{9^{3}}{9^{-1}}}{\dfrac{9^{8}}{9^{-7}}}$=

Simplifiez $\dfrac{\dfrac{8^{12}}{8^{5}}}{\dfrac{8^{-8}}{8^{11}}}$=

Simplifiez $\dfrac{\dfrac{7^{12}}{7^{8}}}{\dfrac{7^{-4}}{7^{4}}}$=

Simplifiez $\bigg(\dfrac{3^{-12}}{3^{-1}}\bigg)^{-2}\times\dfrac{3^{-4}}{3^{-12}}$=