kak tolong di jawab beserta jalannya ya

[tex]( { \frac{1}{3} })^{4} = ( \frac{1}{3} ) \times ( \frac{1}{3}) \times ( \frac{1}{3}) \times ( \frac{1}{3}) \\ = \frac{1}{81} \\ \\ ( { \frac{2}{3} })^{ - 4} = ( - \frac{2}{3} ) \times ( - \frac{2}{3}) \times ( - \frac{2}{3}) \times ( - \frac{2}{3}) \\ = \frac{16}{81} \\ \\ ( - { \frac{1}{3} })^{2} = ( - \frac{1}{3} ) \times ( - \frac{1}{3}) \\ = \frac{1}{9} \\ \\ ( - { \frac{2}{7} })^{ - 4} = ( \frac{2}{7} ) \times ( \frac{2}{7}) \times ( \frac{2}{7}) \times ( \frac{2}{7}) \\ = \frac{16}{2401} [/tex]