Odpowiedź:
a)
[tex]4 \sqrt{7} = \sqrt{4 \times 4 \times 7} = \sqrt{112} [/tex]
b)
[tex]3 \sqrt[3]{2} = \sqrt[3]{ {3}^{3} \times 2 } = \sqrt[3]{54} [/tex]
8.
a)
b)
[tex] \sqrt{12} + 3 \sqrt{3} = \sqrt{3 \times 4} + 3 \sqrt{3} = 2 \sqrt{3} + 3 \sqrt{3} = 5 \sqrt{3} [/tex]
c)
