Powers of a Fraction: Inverse formula

Insert the corresponding expression:

$\frac{20^4}{31^4}=$

$\left(\frac{20}{31}\right)^4$

Insert the corresponding expression:

$\frac{10^5}{17^5}=$

$\left(\frac{10}{17}\right)^5$

Insert the corresponding expression:

$\frac{12^3}{23^3}=$

$\left(\frac{12}{23}\right)^3$

Insert the corresponding expression:

$\frac{1^2}{3^2}=$

$\left(\frac{1}{3}\right)^2$

Insert the corresponding expression:

$\frac{1^5}{6^5}=$

$\left(\frac{1}{6}\right)^5$

Insert the corresponding expression:

$\frac{1^7}{9^7}=$

$\left(\frac{1}{9}\right)^7$

Insert the corresponding expression:

$\frac{2^4}{7^4}=$

$\left(\frac{2}{7}\right)^4$

Insert the corresponding expression:

$\frac{2^9}{11^9}=$

$\left(\frac{2}{11}\right)^9$

Insert the corresponding expression:

$\frac{3^6}{8^6}=$

$\left(\frac{3}{8}\right)^6$

Insert the corresponding expression:

$\frac{7^{10}}{9^{10}}=$

$\left(\frac{7}{9}\right)^{10}$

Insert the corresponding expression:

$\frac{1}{20^2}=$

$20^{-2}$

Insert the corresponding expression:

$\frac{1}{6^7}=$

$6^{-7}$

Insert the corresponding expression:

$\frac{1}{3^2}=$

$3^{-2}$

Insert the corresponding expression:

$\frac{1}{4^2}=$

$4^{-2}$

Insert the corresponding expression:

$\frac{1}{5^2}=$

$5^{-2}$

Insert the corresponding expression:

$\frac{2^9\times3^9}{11^9\times7^9}=$

a'+b' are correct

Insert the corresponding expression:

$\frac{4^3}{5^3\times7^3}=$

$\left(\frac{4}{5\times7}\right)^3$

Insert the corresponding expression:

$\frac{5^7\times4^7}{19^7}=$

A+B are correct

Insert the corresponding expression:

$\frac{6^5}{13^5\times4^5}=$

$\left(\frac{6}{13\times4}\right)^5$

Insert the corresponding expression:

$\frac{6^6\times11^6}{5^6\times13^6}=$

A+B are correct