## Algebra 1: Common Core (15th Edition)

= $5\sqrt 3 -3 \sqrt 5$.
We can simplify the expression as follows: = $\sqrt 5(\sqrt 15 - 3)$ = $\sqrt 5((\sqrt 5*\sqrt 3) - \sqrt 3* \sqrt 3)$ = $\sqrt 5(\sqrt 3(\sqrt 5 -\sqrt 3))$ ( Taking out $\sqrt 3$) = $5\sqrt 3 -3 \sqrt 5$.