Question

How to transform an expression to radical form `(81/625)^(-1/4)`?

Answer 1

`5/3`

Explanation:

`(81/625)^(-1/4)=[(81/625)^(-1)]^(1/4)=[625/81]^(1/4)=[5^4/3^4]^(1/4)=[5^4]^(1/4)/[3^4]^(1/4)= 5^(4xx1/4)/3^(4xx1/4)=color(blue)(5/3)`