## Algebra 1

$2ab\sqrt{5b}$
$\sqrt{20a^2b^3}\longrightarrow$ factor out perfect square =$\sqrt{4a^2b^2\times5b}\longrightarrow$ multiplication property of square roots =$\sqrt{4a^2b^2}\times\sqrt{5b}\longrightarrow$ simplify =$2ab\sqrt{5b}$