Question

Решите, срочно!$frac{1}{2} * sqrt{7} * frac{1}{7} * 3 sqrt{28}$

Answer 1

$frac{1}{2} cdot sqrt7cdot frac{1}{7} cdot 3sqrt{28}= frac{sqrt7cdot 3sqrt{7cdot 4}}{2cdot 7} = frac{7cdot 3cdot 2}{2cdot 7} =3$