[tex](-7,2)^3 * (- \frac{5}{18})^3 : (-0,8)^3 =((-7,2)*(-\frac{5}{18}):(-0,8))^3= (- \frac{72}{10} *\frac{5}{18}: \frac{8}{10})^3= \\\\=(- \frac{\not{72}^9}{\not{10}^1} *\frac{5}{18}* \frac{\not{10}^1}{\not{8}^1})^3 =(-\frac{45}{18})^3=(-\frac{ 5}{2})^3=-\frac{125}{8}=-15,625 \\\\\\stosujemy\ wzor:\\\\a^n*b^n=(a*b)^n[/tex]
