a)
[tex]7 \sqrt[3]{7} + \sqrt[3]{56} = 7 \sqrt[3]{7} + \sqrt[3]{8 \times 7} = 7 \sqrt[3]{7} + 2 \sqrt[3]{7} = 9 \sqrt[3]{7} [/tex]
S
b)
[tex] \sqrt[3]{2000} - \sqrt[3]{250} = \sqrt[3]{1000 \times 2} - \sqrt[3]{125 \times 2} = 10 \sqrt[3]{2} - 5 \sqrt[3]{2} = 5 \sqrt[3]{2} [/tex]
E
c)
[tex] \sqrt[3]{3000} + \sqrt[3]{24} - \sqrt[3]{81} = \sqrt[3]{1000 \times 3} + \sqrt[3]{8 \times 3} - \sqrt[3]{27 \times 3} = 10 \sqrt[3]{3} + 2 \sqrt[3]{3} - 3 \sqrt[3]{3} = 9 \sqrt[3]{3} [/tex]
N
d)
[tex] \sqrt[3]{7000} - \sqrt[3]{7} = \sqrt[3]{1000 \times 7} - \sqrt[3]{7} = 10 \sqrt[3]{7} - \sqrt[3]{7} = 9 \sqrt[3]{7} [/tex]
S
Hasło to: SENS
Myślę że pomogłem ;)