Question

Pode me ajudar ...??pfv
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Answer 1

Simplifique os radicais:
$a)\ \sqrt{3\cdot5^2}= \sqrt{3}\cdot\sqrt{5^2}=\sqrt{3}\cdot5=5\sqrt{3}\\ b)\ \sqrt{75}=\sqrt{25\cdot3}=\sqrt{25}\cdot\sqrt{3}=5\sqrt{3}\\ c)\ \sqrt[3]{7^3\cdot2}=\sqrt[3]{7^3}\cdot\sqrt[3]{2}=7\sqrt[3]{2}\\ d)\ \sqrt[3]{40}=\sqrt[3]{8\cdot5}=\sqrt[3]{8}\cdot\sqrt[3]{5}=2\sqrt[3]{5}\\ e)\ \sqrt[3]{189}=\sqrt[3]{27\cdot7}=\sqrt[3]{27}\cdot\sqrt[3]{7}=3\sqrt[3]{7}\\ f)\ \sqrt[3]{81}=\sqrt[3]{27\cdot3}=\sqrt[3]{27}\cdot\sqrt[3]{3}=3\sqrt[3]{3}$