Answer:
Option D
Explanation:
Given :

To find : radical form of function
Solution : Radical form is defined by n is a positive integer that is greater than x and a is a real number or a factor then,
![a^(x)/(n)=\sqrt[n]{a^x}](https://img.qammunity.org/2017/formulas/mathematics/high-school/f13kv9twcq8du9nqaptjxd0rp21y2rr74t.png)
Now, using above formula we can write
![x^(3)/(4)=\sqrt[4]{x^3}](https://img.qammunity.org/2017/formulas/mathematics/high-school/egns6yymtrc0b2ghy37gcl1ovx1580tlay.png)
Required result is
![6x^(3)/(4)=6\sqrt[4]{x^3}](https://img.qammunity.org/2017/formulas/mathematics/high-school/gsjqtpi2sz21uonyjix1hcwo2ts4kxgfnh.png)
therefore option D is correct