Question

Найти значения выражения $frac{sqrt{720}* sqrt{120} }{sqrt{40} }$

Answer 1

$frac{ sqrt{720}* sqrt{120} }{ sqrt{40} } = frac{ sqrt{720}* sqrt{40*3} }{ sqrt{40} } =frac{ sqrt{720}* sqrt{40}* sqrt{3} }{ sqrt{40} } =sqrt{720}* sqrt{3} = sqrt{720*3} = \ =sqrt{2160} =sqrt{144*15} =12sqrt{15}$