Question

Вычеслите 1:2*√7*4:√28

Answer 1

$\frac{1}{2 \sqrt{7}}* \frac{4}{ \sqrt{28}}= \frac{1}{2 \sqrt{7}}* \frac{4}{2 \sqrt{7} }= \frac{4}{4*7}= \frac{1}{7}$