Вычислите:
1) $5^{-2}$;
2) $2^{-4}$;
3) $(-9)^{-2}$;
4) $0,2^{-3}$;
5) $1^{-24}$;
6) $(-1)^{-16}$;
7) $(-1)^{-17}$;
8) $(\frac{7}{8})^{0}$;
9) $(\frac{2}{3})^{-3}$;
10) $(-1\frac{1}{6})^{-2}$.
$5^{-2} = (\frac{1}{5})^2 = \frac{1}{25}$
$2^{-4} = (\frac{1}{2})^4 = \frac{1}{16}$
$(-9)^{-2} = (\frac{1}{-9})^2 = \frac{1}{81}$
$0,2^{-3} = (\frac{2}{10})^{-3} = (\frac{1}{5})^{-3} = 5^3 = 125$
$1^{-24} = 1^{24} = 1$
$(-1)^{-16} = 1^{16} = 1$
$(-1)^{-17} = (-1)^{17} = -1$
$(\frac{7}{8})^{0} = 1$
$(\frac{2}{3})^{-3} = (\frac{3}{2})^{3} = \frac{27}{8} = 3\frac{3}{8}$
$(-1\frac{1}{6})^{-2} = (-\frac{7}{6})^{-2} = (-\frac{6}{7})^2 = \frac{36}{49}$
Пожауйста, оцените решение