tolong jawab pakai cara? mulai no 8 sampai 9

8.
[tex]( \frac{b^{-2}}{c^{-1}})^{2} \\ = ( \frac{c}{b^{2}})^{2} \\ = \frac{c^{2}}{b^{2.2}} \\ = \frac{c^{2}}{b^{4}}[/tex]

9.
[tex]( \frac{c^{2}}{d^{-3}} )^{-2} \\ = ( \frac{c^{2}d^{3}}{1} )^{-2} \\ = ( \frac{c^{2.(-2)}d^{3.(-2)}}{1} ) \\ = ( \frac{c^{-4}d^{-6}}{1} ) \\ = ( \frac{1}{c^{4}d^{6}} )[/tex]