tolong dibantu ya kak soalnya aku blm paham caranya

[tex] = ( {9}^{ \frac{1}{3} } )^{ - 6} \\ = ( {9}^{ - 2} ) \\ = ( \frac{1}{ {9}^{2} } ) \\ = ( \frac{1}{81} )[/tex]
Jawaban D.