Odpowiedź:
[tex](1\frac{2}{7})^2 = (1\frac{2}{7}) * (1\frac{2}{7}) = \frac{9}{7} * \frac{9}{7} = \frac{81}{49}[/tex] = [tex]1\frac{32}{49}[/tex]
[tex](1\frac{2}{7})^{2} = (\frac{9}{7})^{2} = \frac{9}{7}\times\frac{9}{7} = \frac{81}{49} = 1\frac{32}{49}[/tex]
