#### Answer

$-9m^3-6m^2+6m$

#### Work Step by Step

Removing the grouping symbols and then combining like terms, the given expression, $
[-(4m^2-8m+4m^3)-(3m^2+2m+5m^3)]+m^2
,$ simplifies to
\begin{array}{l}\require{cancel}
[-4m^2+8m-4m^3-3m^2-2m-5m^3]+m^2
\\\\=
-4m^2+8m-4m^3-3m^2-2m-5m^3+m^2
\\\\=
(-4m^3-5m^3)+(-4m^2-3m^2+m^2)+(8m-2m)
\\\\=
-9m^3-6m^2+6m
.\end{array}