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