Question

Express 81^-5 as a power with the base 3 and positive exponent.

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

${81}^{ - 5} = \frac{1}{ {81}^{5} } = \frac{1}{ { ({3}^{4} )}^{5} } = \frac{1}{ {3}^{20} }$