Simplifiez $\dfrac{2^{12}\times 2^{11}}{2^{5}}$=

Simplifiez $7^{-7}\times 7^{8}$=

Simplifiez $9^{-4}\times 9^{1}$=

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

Simplifiez $\dfrac{3^{7}}{3^{-4}}$=

Simplifiez $\bigg(\dfrac{2^{5}}{2^{9}}\bigg)^{-3}$=

Simplifiez $\dfrac{5^{-12}\times 5^{-1}}{5^{-8}}$=

Simplifiez $3^{-7}\times\dfrac{3^{-5}}{3^{9}}$=

Simplifiez $\bigg(\dfrac{7^{-10}}{7^{-5}}\bigg)^{-9}$=

Simplifiez $8^{-11}\times 8^{9}$=