[tex]\\ \bull\tt\longmapsto \left(-1\dfrac{2}{3}\right)^2[/tex]
[tex]\\ \bull\tt\longmapsto \left(\dfrac{-1}{3}\right)^2[/tex]
[tex]\\ \bull\tt\longmapsto \dfrac{(-1)^2}{3^2}[/tex]
[tex]\\ \bull\tt\longmapsto \dfrac{1}{9}[/tex]
