Szczegółowe wyjaśnienie:
a)
[tex] \sqrt{50} = \sqrt{25 \times 2} = 5 \sqrt{2} [/tex]
b)
[tex] \sqrt[3]{16} = \sqrt[3]{8 \times 2} = 2 \sqrt[3]{2} [/tex]
c)
[tex]2 \sqrt{32} = 2 \sqrt{16 \times 2} = 2 \times 4 \sqrt{2} = 8 \sqrt{2} [/tex]
d)
[tex] \sqrt[3]{ ( - 81)} = \sqrt[3]{ - 27 \times 3} = - 3 \sqrt[3]{3} [/tex]
