the question is 4/(^{4}√64m^{4}n^{2})
the given answer is
(^{4}√4n^{2}) / 2mn
but I get 4(^{4}√n^{2})/ 2mn
^{4}√ = root with 'index=4'
*the index 4 root is for the all
-( 64m^{4}n^{2})
-(4n^{2})
-(n^{2})
I'm not good at writing mathematics symbols sorry. help please SOS