## Algebra 1

$12m^2$
We use the rules of exponents to simplify the following problem. $3\sqrt {5m}\times4\sqrt {\frac{1}{5}m^3}\\\\=3\times4\times\sqrt {5m\times\frac{1}{5}m^3}\\\\=12\times\sqrt {m^4}\\\\=12m^2$