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Pomocy!
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Konradglaznet

b) √4/5 * √6/10 * √12 = √4*6/5*10 *√12 = √24/50 *√12 = √288/50 = √5 38/50 = √5 19/25 = √144/25 = 12/5 = 2 2/5

c) ∛1 8/40 * ∛2 20/40 * ∛1 5/40 = ∛48*100/40*40 *∛45/40 = ∛3 * ∛45/40 = ∛135/40 = ∛3 15/40 = ∛3 3/8 = ∛27/8 = 3/2 = 1 1/2

Krysia

[tex]b)\\\\\sqrt{\frac{4}{5}}*\sqrt{0,6}*\sqrt{12}=\sqrt{\frac{4}{5}*0,6*12}=\sqrt{\frac{4}{5}* \frac{6}{10}*12}=\sqrt{\frac{4}{5}* \frac{3}{5}*12} =\\\\= \sqrt{\frac{144}{25} }=\frac{12}{5}=2\frac{2}{5}[/tex]

[tex]b)\\\\\sqrt[3]{1\frac{1}{5}}*\sqrt[3]{2,5}*\sqrt[3]{1 \frac{1}{8}}=\sqrt{\frac{6}{5}* \frac{2 5}{10}* \frac{9}{8}}=\sqrt{\frac{\not{6}^3}{\not{5}^1}* \frac{\not{5}^1}{\not{2}^1}* \frac{9}{8}}= \sqrt{\frac{27}{8} }=\frac{3}{2}=1\frac{1}{2}[/tex]

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