# How do you multiply sqrt4*sqrt4?

Jun 6, 2015

$\sqrt{4} \cdot \sqrt{4}$

$= \sqrt{4 \cdot 4}$

$= \sqrt{16}$

 = color(blue)(4

Jun 6, 2015

$\sqrt{4} \cdot \sqrt{4} = {\left(\sqrt{4}\right)}^{2} = 4$

by definition of square and square root