Найдите значение выражения √ 7 ⋅ 33 √ 11 ⋅ 21 7 ⋅ 33 ‾ ‾ ‾ ‾ ‾ ‾ √ 11 ⋅ 21 ‾ ‾ ‾ ‾ ‾ ‾ ‾ √ .