Respuesta:
[tex]( \frac{1}{2} + \frac{1}{4})^{2} \div \frac{1}{4} - \sqrt{ \frac{9}{4} } + \frac{1}{5} = \\ \frac{9}{16} \div \frac{1}{4} - 1 \frac{1}{2} + \frac{1}{5} = \\ 2 \frac{1}{4} - 1 \frac{1}{2} + \frac{1}{5} = \\ \frac{3}{4} + \frac{1}{5} = \frac{19}{20}[/tex]
