Question

Daca am radical de ordin 3 din 81 cum scot de sub radical?

Answer 1

$\sqrt[3]{81} = \sqrt[3]{3 \times 3 \times 3 \times 3} = \sqrt[3]{(3 \times 3 \times 3) \times 3} = \sqrt[3]{ {3}^{3} \times 3 } = 3 \sqrt[3]{3}$