Consider the expression $\displaystyle \sqrt{{{320}}}$, which simplifies to an expression in the form $\displaystyle {A}\sqrt{{{B}}}.$ Simplify this expression completely and place the appropriate numbers in the boxes given.

Answer: $\displaystyle \sqrt{{{320}}}={A}\sqrt{{{B}}}$, where
$\displaystyle {A}=$ and
$\displaystyle {B}=$