tolon y pake cara ya juga

[tex]( - \frac{8}{27} ) {}^{ \frac{ - 2}{3} } = { ( - \frac{ {2}^{3} }{ {3}^{3} } )}^{ \frac{ - 2}{3} } \\ \\ = ( - \frac{ {2}^{ - 2} }{ {3}^{ - 2} } ) \\ \\ = ( - \frac{2}{3} ) {}^{ - 2} \\ \\ = ( - \frac{3}{2} ) {}^{2} \\ \\ = - \frac{9}{4} [/tex]