[tex]\frac{4}{5} \times \frac{4}{5} \times \frac{4}{5} \times \frac{4}{5} = \frac{256}{625} [/tex]
[tex]\frac{2}{7} \times \frac{2}{7} \times \frac{2}{7} \times \frac{2}{7} = \frac{16}{2401} [/tex]
[tex]1 \times \frac{2}{3} \times 1\frac{2}{3} \times 1\frac{2}{3} \times 1\frac{2}{3} = \frac{40}{81} [/tex]
Sper ca ți-am fost de ajutor=)
Succes la școală!