Solve this:
Q. Convert into power notation
a. $\frac{-27}{125}$
b. $\frac{49}{81}$

Dear student,
(a) $\frac{-27}{125}=\frac{-3\times -3\times -3}{5\times 5\times 5}=\frac{(-3{)}^3}{5^3}$=$(\frac{-3}{5}{)}^3$, Which is the required power notation.
(b)$\frac{49}{81}=\frac{7\times 7}{9\times 9}=\frac{7^2}{9^2}$=$(\frac{7}{9}{)}^2$,Which is the required power notation.
Regards