Odpowiedź:
[tex]7. \: a) \frac{7 \sqrt{7} + 8 \sqrt{7} }{6 \sqrt{7} - \sqrt{7} } = \frac{15 \sqrt{7} }{5 \sqrt{7} } = 3[/tex]
[tex]b) \frac{15 \sqrt[3]{250} }{5 \sqrt[3]{2} } = \frac{15 \sqrt[3]{125 \times 2} }{5 \sqrt[3]{2} } = \frac{15 \times 5 \sqrt[3]{2} }{5 \sqrt[3]{2} } = \frac{75 \sqrt[3]{2} }{5 \sqrt[3]{2} } = 15[/tex]
