Explicação passo-a-passo:
A)
[tex]( \dfrac{2}{3} ) {}^{2} [/tex]
[tex] \dfrac{2 {}^{2} }{3 {}^{2} } [/tex]
[tex] \dfrac{4}{9} [/tex]
B)
[tex]( \dfrac{4}{7} ) {}^{2} [/tex]
[tex] \dfrac{4 {}^{2} }{7 {}^{2} } [/tex]
[tex] \dfrac{16}{49} [/tex]
C)
[tex]( \dfrac{7}{5} ) {}^{2} [/tex]
[tex] \dfrac{7 {}^{2} }{5 {}^{2} } [/tex]
[tex] \dfrac{49}{25} [/tex]
D)
[tex]( \dfrac{1}{3} ) {}^{2} [/tex]
[tex] \dfrac{1 {}^{2} }{3 {}^{2} } [/tex]
[tex] \dfrac{1}{9} [/tex]
E)
[tex]( \dfrac{5}{3} ) {}^{2} [/tex]
[tex] \dfrac{5 {}^{2} }{3 {}^{2} } [/tex]
[tex] \dfrac{25}{9} [/tex]
