Răspuns:
a) √4/9=√4/√9=2/3
b) √25/49=√25/√49=5/7
c) √81/100=√81/√100=9/10
[tex]\it\sqrt{\dfrac{4}{9}}=\dfrac{2}{3}\\ \\ \\ \sqrt{\dfrac{25}{49}}=\dfrac{5}{7}\\ \\ \sqrt{\dfrac{81}{100}}=\dfrac{9}{10}[/tex]
