matematyka zad 8 str 15 oblicz klasa 8

[tex]b)\ \ (\sqrt[3]{7})^3-(\sqrt{3})^2=7-3=4\\\\c)\ \ (\sqrt{12})^2+\sqrt[3]{13^3}=12+13=25\\\\d)\ \ (2\sqrt[3]{4})^3+(3\sqrt{2})^2=2^3\cdot(\sqrt[3]{4})^3+3^2\cdot(\sqrt{2})^2=8\cdot4+9\cdot2=32+18=50\\\\e)\ \ (10\sqrt[3]{5})^3-(5\sqrt{2})^2=10^3\cdot(\sqrt[3]{5})^3-5^2\cdot(\sqrt{2})^2=1000\cdot5-25\cdot2=\\\\=5000-50=4950[/tex]

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Kontonawszystkoviz Kontonawszystkoviz · Answer 2

[tex]b)( \sqrt[3]{7} {)}^{3} - ( \sqrt{3} {)}^{2} = 7 - 3 = 4[/tex]

[tex]c)( \sqrt{12} {)}^{2} + \sqrt[3]{ {13}^{3} } = 12 + 13 = 25[/tex]

[tex]d)(2 \sqrt[3]{4} {)}^{3} + (3 \sqrt{2} {)}^{2} = {2}^{3} \times (\sqrt[3]{4} {)}^{3} + {3}^{2} \times ( \sqrt{2} {)}^{2} = 8 \times 4 + 9 \times 2 = 32+ 18 = 50[/tex]

[tex]e)(10 \sqrt[3]{5} {)}^{3} - (5 \sqrt{2} {)}^{2} = {10}^{3} \times ( \sqrt[3]{5} {)}^{3} - {5}^{2} \times ( \sqrt{2} {)}^{2} = 1000 \times 5 - 25 \times 2 = 5000 - 50 = 4950[/tex]