a) 5⁻² $$= \frac{1}{5^2} = \frac{1}{25} =$$ 0,04
б) (⅔)⁻² $$= (\frac{3}{2})^2 = \frac{3^2}{2^2} = \frac{9}{4} =$$ 2,25
в) (3,5)⁻¹ $$= (\frac{7}{2})^{-1} = \frac{2}{7} \approx$$ 0,2857
г) (⅓)⁻² $$= (\frac{1}{3})^{-2} = 3^2 =$$ 9
д) (0,3)⁻³ $$= (\frac{3}{10})^{-3} = (\frac{10}{3})^3 = \frac{10^3}{3^3} = \frac{1000}{27} \approx$$ 37,037
e) (-11)⁰ $$=$$ 1
ж) (-2⁴⁄₁₁)⁻¹ $$= (-\frac{26}{11})^{-1} = -\frac{11}{26} \approx$$ -0,423
з) -(1³⁄₇)⁻² $$= -(\frac{10}{7})^{-2} = -(\frac{7}{10})^2 = -\frac{7^2}{10^2} = -\frac{49}{100} =$$ -0,49