Odpowiedź:
[tex]a)\ \ 2,85\cdot(-8)=-22,8\\\\b)\ \ (-2,2)^3=(-\frac{22}{10})^3=(-\frac{11}{5})^3=-\frac{11^3}{5^3}=-\frac{1331}{125}=-10\frac{81}{125}\\\\c)\ \ -0,4\cdot(-\frac{1}{5})^2=-\frac{4}{10}\cdot\frac{1}{25}=-\frac{2}{5}\cdot\frac{1}{25}=-\frac{2}{125}\\\\d)\ \ -5,6:(-0,7)=5,6:0,7=56:7=8[/tex]
