Express the following as pure surds.
Given, 5∛4
Need to express it as pure surd
⇒ 5∛4 can be expressed as (∛5)3.∛4
⇒ 
= 
= 
∵ a surd with rational coefficient as unity is pure surd
∴ 
is a pure surd
Hence, 5∛4 is expressed as pure surd
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