4 years ago

How would I work this out in my head, without a calculator??

Mathematics

1 answer:

Arte-miy333 [17]4 years ago

5 0

$243^{\frac{4}{5}}=\sqrt[5]{243^4}=\sqrt[5]{(3^5)^4}=\sqrt[5]{(3^4)^5}=3^4=81$

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