[tex](\frac{3}{4} - ( - \frac{1}{2} {))}^{2} [/tex]
[tex] {( \frac{3}{4} + \frac{1}{2} )}^{2} [/tex]
[tex] {( \frac{3 \times 2 + 1 \times 4}{4 \times 2}) }^{2} [/tex]
[tex] {( \frac{6 + 4}{8} )}^{2} [/tex]
[tex]( \frac{10}{8} {)}^{2} [/tex]
[tex]( { \frac{5}{4}) }^{2} [/tex]
[tex] \frac{ {5}^{2} }{ {4}^{2} } [/tex]
[tex] \frac{25}{16} [/tex]
