Resposta:
Explicação passo-a-passo:
[tex]a)\ \sqrt[2]{\frac{361}{324}}=\frac{19}{18} \\\\b)\ \sqrt[2]{\frac{100}{400} } =\frac{10}{20} =\frac{1}{2} \\\\c)\ \sqrt[2]{\frac{256}{144} } =\frac{16^{:4}}{12_{:4}} =\frac{4}{3} \\\\[/tex]
