Question

Корень из m + 12/5 / корень а,где m=4 a=81/25

Answer 1

$frac{frac{sqrt{m+12}}{5}}{sqrt{a}}=frac{frac{sqrt{m+12}}{sqrt{25}}}{sqrt{a}}=frac{sqrt{frac{m+12}{25}}}{sqrt{a}}=sqrt{frac{m+12}{25}*frac{1}{a}}=sqrt{frac{16}{25}*frac{25}{81}}=sqrt{(frac{4}{9})^2}=frac{4}{9}$