Question

 resolver  (7/5 - 2/6 )² =

Answer 1

Fica mais facil se transformar tudo para forma decimal

(7/5-2/6)²
(1,4 - 0,33)²
(1,07)²
1,14

Answer 2

$( \frac{7}{5} - \frac{2}{6})^2$

MMC de 5, e 6 = 30

$( \frac{42 -10}{30} )^2 \\ \\ ( \frac{32}{30} )^2 \\ \\ \frac{1024}{900} \\ \\ \frac{1024}{900} \frac{\div}{\div} \frac{4}{4} = \frac{256}{225}$