# How do you simplify sqrt(81)?

Jul 13, 2015

$\sqrt{81} = 9$
$\sqrt{81}$ is the positive value $k$ such that ${k}^{2}$ (or if you prefer, $k \times k$) $= 81$
Since ${9}^{2} = 81$
$\textcolor{w h i t e}{\text{XXXX}}$$\sqrt{81} = 9$