2 ①(-2\frac{1}{3})^2 ②> 34:17 = 36:(-12)= -486(-16)= ③ 1,3:1-\frac{1}{4})= -3\frac{1}{7}・4\frac{8}{11}= - вариант (-\frac{5}{4})^3, \frac{4}{5}・(-16)= -\frac{7}{15}・(-\frac{9}{14})= \frac{35}{16}:7= \frac{4}{5} (-0,3)= -2\frac{2}{5}・3,4= 0,8.(-2,6)= 6(0,3)=

• Пример 1:

(-2\frac{1}{3})^2 = (-\frac{7}{3})^2 = \frac{49}{9} = 5\frac{4}{9}

• Пример 2:

34 : 17 = 2

• Пример 3:

36 : (-12) = -3

• Пример 4:

-48 : (-16) = 3

• Пример 5:

1,3 : (-\frac{1}{4}) = 1,3 : (-0,25) = -5,2

• Пример 6:

-3\frac{1}{7} \cdot 4\frac{8}{11} = -\frac{22}{7} \cdot \frac{52}{11} = -\frac{2 \cdot 52}{7} = -\frac{104}{7} = -14\frac{6}{7}

• Пример 7:

(-\frac{5}{4})^3 = -\frac{125}{64} = -1\frac{61}{64}

• Пример 8:

\frac{4}{5} \cdot (-16) = \frac{-64}{5} = -12\frac{4}{5}

• Пример 9:

-\frac{7}{15} \cdot (-\frac{9}{14}) = \frac{7 \cdot 9}{15 \cdot 14} = \frac{1 \cdot 3}{5 \cdot 2} = \frac{3}{10} = 0,3

• Пример 10:

\frac{35}{16} : 7 = \frac{35}{16} \cdot \frac{1}{7} = \frac{5}{16}

• Пример 11:

\frac{4}{5} \cdot (-0,3) = \frac{4}{5} \cdot (-\frac{3}{10}) = -\frac{12}{50} = -\frac{6}{25} = -0,24

• Пример 12:

-2\frac{2}{5} \cdot 3,4 = -\frac{12}{5} \cdot \frac{34}{10} = -\frac{12 \cdot 34}{50} = -\frac{6 \cdot 34}{25} = -\frac{204}{25} = -8\frac{4}{25} = -8,16

• Пример 13:

0,8 \cdot (-2,6) = -2,08

• Пример 14:

6 \cdot (0,3) = 1,8