[tex]a)\, \, \frac{ \sqrt{784}}{ \sqrt{1225}}= \sqrt{ \frac{784}{1225}} = \sqrt{ \frac{112}{175}}=\sqrt{ \frac{16}{25}}= \frac{4}{5} [/tex]
[tex]b)\,\,\frac{ \sqrt[3]{-125} }{ \sqrt[3]{-64}}= \sqrt[3]{ \frac{-125}{-64}}=\sqrt[3]{ \frac{125}{64}}= \frac{5}{4} [/tex]
