Question

10 в -1 степени +5 в -2 степени​

Answer 1

$10 {}^{ - 1} + 5 {}^{ - 2} = \dfrac{1}{10 {}^{1} } + \dfrac{1}{5 {}^{2} } = \dfrac{1}{10} + \dfrac{1}{25} = \dfrac{5 + 2}{50} = \dfrac{7}{50} .$