How do you simplify sqrt(5)sqrt(15)?

Feb 13, 2015

You could also do either of the following:

$\sqrt{5} \sqrt{15} = \sqrt{5} \cdot \sqrt{5 \cdot 3} = \sqrt{5} \cdot \sqrt{5} \cdot \sqrt{3} = \sqrt{25} \cdot \sqrt{3} = 5 \sqrt{3}$

$\sqrt{5} \sqrt{15} = \sqrt{5} \cdot \sqrt{5} \cdot \sqrt{3} = \sqrt{25} \cdot \sqrt{3} = 5 \sqrt{3}$