[1/3] ^-2n  / [1/3] ^-2  x [1/3 ^n/2 ] ^-2  - [1/3

/

[1/3^-2/3] ^9/2m x [1/16^-3]^1/4

if m-n =[ 2^m+n]^m-n . [2^n+p]^n-p . [2^p+m]^p-m .

 pls meritnation expert tell fast i have a test