Exercícios 7º

$\sqrt{25}=5$ $\sqrt{36}=6$ $\sqrt{81}=9$ $\sqrt{100}=10$

$\sqrt{12}=\sqrt{3\times 4}=\sqrt{3}\times \sqrt{4}=\sqrt{3}\times 2=2\sqrt{3}$ $\sqrt{75}=\sqrt{3\times 25}=\sqrt{3}\times \sqrt{25}=\sqrt{3}\times 5=5\sqrt{3}$ $\sqrt{200}=\sqrt{2\times 100}=\sqrt{2}\times \sqrt{100}=\sqrt{2}\times 10=10\sqrt{2}$

$\sqrt[3]{27}=3$ $\sqrt[3]{64}=4$ $\sqrt[3]{-8}=-2$ $\sqrt[3]{-125}=-5$

$\sqrt[3]{16}=\sqrt[3]{8\times 2}=\sqrt[3]{8}\times \sqrt[3]{2}=2\times \sqrt[3]{2}=2\sqrt[3]{2}$ $\sqrt[3]{40}=\sqrt[3]{8\times 5}=\sqrt[3]{8}\times \sqrt[3]{5}=2\times \sqrt[3]{5}=2\sqrt[3]{5}$ $\sqrt[3]{54}=\sqrt[3]{27\times 2}=\sqrt[3]{27}\times \sqrt[3]{2}=3\times \sqrt[3]{2}=3\sqrt[3]{2}$