Answer
$-4p^3+10p^2+5p-5$
Work Step by Step
Removing the grouping symbols and then combining like terms, the given expression, $
(3p^2+2p-5)+(7p^2-4p^3+3p)
,$ simplifies to
\begin{array}{l}\require{cancel}
3p^2+2p-5+7p^2-4p^3+3p
\\\\=
-4p^3+(3p^2+7p^2)+(2p+3p)-5
\\\\=
-4p^3+10p^2+5p-5
.\end{array}
