Cześć!
Szczegółowe wyjaśnienie:
a)
[tex]( \frac{1}{5} ) {}^{2} = \frac{1 \cdot1}{5 \cdot5} = \frac{1}{25} [/tex]
b)
[tex]( \frac{2}{5} ) {}^{3} = \frac{2 \cdot2 \cdot2}{5 \cdot5 \cdot5} = \frac{8}{125} [/tex]
c)
[tex](1 \frac{2}{5} ) {}^{2} = ( \frac{7}{5} ) {}^{2} = \frac{7 \cdot7}{5 \cdot5} = \frac{49}{25} [/tex]
d)
[tex](2 \frac{1}{2} ) {}^{3} = ( \frac{5}{2} ) {}^{3} = \frac{5 \cdot5 \cdot5}{2 \cdot2 \cdot2 } = \frac{125}{8} [/tex]
