Answer
$8a^2b^2+6ab^2+ab^3+b^3+6ab-5$
Work Step by Step
Removing the grouping symbols and then combining like terms, the given expression, $
(8a^2b^2-ab+b^3)-(-6ab^2-7ab-ab^3+5)
,$ simplifies to
\begin{array}{l}\require{cancel}
8a^2b^2-ab+b^3+6ab^2+7ab+ab^3-5
\\\\=
8a^2b^2+6ab^2+ab^3+b^3+(-ab+7ab)-5
\\\\=
8a^2b^2+6ab^2+ab^3+b^3+6ab-5
.\end{array}
