a)
[tex]a \times b[/tex]
[tex]5 \sqrt{20} \times 2 \sqrt{50} = 10 \sqrt{1000} = 10 \sqrt{100 \times 10} = 100 \sqrt{10} {cm}^{2} [/tex]
b)
[tex]a \times b[/tex]
[tex]5 \sqrt[3]{20} \times 2\sqrt[3]{50} = 10 \sqrt[3]{1000} = 100 {cm}^{2} [/tex]
Myślę że pomogłem ;)
