Question

(-1) la a 4 + 2 pe 3 ori ( 1 pe 3 - 5 pe 6 împărțit la 5 pe 3)

Answer 1

${( - 1)}^{4} + \frac{2}{3} \times ( \frac{1}{3} - \frac{5}{6} \div \frac{5}{3} ) = \\ = 1 + \frac{2}{3} \times ( \frac{1}{3} - \frac{5}{6} \times \frac{3}{5} ) \\ 1 + \frac{2}{3} \times ( \frac{1}{3} - \frac{1}{2} ) \\ 1 + \frac{2}{3} \times ( \frac{2}{6} - \frac{3}{6} ) \\ 1 + \frac{2}{3} \times \frac{( - 1)}{6} = \\ = 1 + \frac{( - 1)}{9} = \\ = \frac{9}{9} + \frac{( - 1)}{9} = \frac{8}{9} = 0.(8)$