Answer:
[tex]7^{-5}[/tex]
Step-by-step explanation:
It looks like you may want an exponential representation of ...
[tex]\dfrac{1}{7\times7\times7\times7\times7}=\dfrac{1}{7^5}=\boxed{7^{-5}}[/tex]
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The applicable rule of exponents is ...
1/a^b = a^-b
