Question 939150

1. 
{{{81^(1/4)=root(4,81)=root(4,3^4)=3}}}

2. 
{{{27^(2/3)=root(3,27^2)=root(3,(3^3)^2)=root(3,3^3*3^3)=3*3=9}}}

3. 
{{{25^(3/2)=sqrt(25^3)=sqrt(25*25*25)=5*5*5=125}}}

4. 
{{{16^(3/4)=root(4,16^3)=root(4,16*16*16)=root(4,4^2*4^2*4^2)=root(4,4^4*2^4)=4*2=8)}}}