Question

Помогите пожалуйста
мне очень срочно надо

Answer 1

$1)2^{-3}=(\frac{1}{2} )^{3}=\frac{1}{8}$

$2)(-3)^{-3}=-(\frac{1}{3} )^{3}=-\frac{1}{27}$

$3)(-1)^{-22}=(-\frac{1}{1} )^{22}=1$

$4)(\frac{2}{5})^{3}=\frac{2^3}{5^3}=\frac{8}{125}$

$5)0,02^{-3}=(\frac{2}{100} )^{-3}=(\frac{1}{50} )^{-3}=(\frac{50}{1} )^{3} =125000$

$6)1,25^{-2}=(\frac{125}{100} )^{-2}=(\frac{5}{4} )^{-2}=(\frac{4}{5})^{2} =0,8^2=0,64$

$7)-4^{-3}=-(\frac{1}{4})^3=-\frac{1}{64}$

$8)(-0,3)^{-2}=(-\frac{3}{10})^{-2}=(-\frac{10}{3})^2=(\frac{10}{3})^2=\frac{100}{9}=11\frac{1}{9}$

$9)(-2\frac{1}{2})^{-3}=(-2,5)^{-3}=(-\frac{25}{10})^{-3}=(-\frac{5}{2})^{-3}= (-\frac{2}{5})^{3}= -\frac{8}{125}$

$10)(-2,25)^{-1}=(-\frac{225}{100} )^{-1}=(-\frac{9}{4} )^{-1}=(-\frac{4}{9})^{1}=-\frac{4}{9}$

$11)-(-2,3)^{-1}=-(-\frac{23}{10} )^{-1}=-(-\frac{10}{23})^{1}=\frac{10}{23}$

$12)-(-2\frac{1}{3})^{-2}=-(-\frac{7}{3})^{-2}=-(-\frac{3}{7})^{2}=-\frac{9}{49}$