Hej!
[tex] \sqrt[3]{27 + 27 + 8 + 1 + 1} = \sqrt[3]{64} = \sqrt[3]{ {4}^{3} } = 4 \\ \\ \sqrt[3]{36 + 64} = \sqrt[3]{100} \\ \\ \sqrt[3]{19 \times 19 \times 19} - \sqrt[3]{ - 1} = \sqrt[3]{ {19}^{3} } - \sqrt[3]{ {( - 1)}^{3} } = 19 - ( - 1) = 20[/tex]
Pozdrawiam! - Julka