Simplifiez $\bigg(7^{-6}\bigg)^{7}$=

Simplifiez $5^{3}\times 5^{-5}$=

Simplifiez $\dfrac{7^{9}}{7^{3}}$=

Simplifiez $5^{-7}\times 4^{-7}$=

Simplifiez $\dfrac{9^{8}}{9^{3}}$=

Simplifiez $\dfrac{5^{3}\times 5^{12}}{5^{7}}$=

Simplifiez $2^{5}\times 2^{-9}\times 2^{-11}$=

Simplifiez $4^{-5}\times 5^{-5}$=

Simplifiez $\dfrac{11^{5}\times 11^{4}}{11^{2}}$=

Simplifiez $6^{-3}\times (-4)^{-3}$=