Es solo cuestión de interpretar
[tex] \frac{1}{4} * ( \frac{1}{ \sqrt{ (-1/6)^{2} } } ) + 5 * ( \frac{1}{12} )^2 = \frac{1}{4} * ( \frac{1}{ \sqrt{ 1/36} } } ) + 5 * \frac{1}{12^{2}} \\ \frac{1}{4} * ( \frac{1}{ 1/6} } } ) + \frac{5}{12^{2}} = \frac{1}{4} * ( 6 ) + \frac{5}{12^{2}} = \frac{6}{4} + \frac{5}{ 12^{2} } \\ \frac{3}{2} + \frac{5}{12^2} = \frac{3 * 12^2 + 5}{12^2} = \frac{432 + 5}{12^2} = \frac{437}{144} [/tex]