Answer:
[tex](6^{10})^{-7}[/tex]
Step-by-step explanation:
Apply the power rule of exponents: [tex](a^m)^n=a^{m\times n}[/tex].
From the given options, the only expression in this form is
[tex](6^{10})^{-7}[/tex]
When we apply the above rule, we get:
[tex](6^{10})^{-7}=6^{10\times -7}[/tex]
[tex](6^{10})^{-7}=6^{-70}[/tex]
All the other options are of the form: [tex]a^m\times a^n=a^{m+n}[/tex]
The correct choice is the second option
