[(n-m)^3]^p*[(m-n)*(n-m)^p]^4
=[(n-m)^3p*(m-n)^4*(n-m)^4p
=[(n-m)^3p*(n-m)^4*(n-m)^4p
=(n-m)^(3p+4+4p)
=(n-m)^(7p+4)