Answer:
[tex] \frac{1}{ {6}^{10} } [/tex]
Step-by-step explanation:
[tex]( {6}^{5} {)}^{ - 2} [/tex]
[tex] {6}^{5 \times ( - 2)} [/tex]
[tex] {6}^{ - 10} [/tex]
[tex] = \frac{1}{ {6}^{10} } [/tex]