Explicação passo-a-passo:
[tex]08) \frac{ \sqrt{49} + 5}{ \sqrt{25} - 2} = \frac{7 + 5}{5 - 2} = \frac{12}{3} = 4 \\ \\ 09) \frac{ \sqrt{4} \times \sqrt{20} }{ \sqrt{20} } = \frac{2 \sqrt{20} }{ \sqrt{20} } = 2 \\ \\ \\ 10) \frac{ \sqrt[9]{32} \times \sqrt[9]{4} }{ \sqrt[9]{16} } = \frac{ \sqrt[9]{32 \times 4} }{ \sqrt[9]{16} } = \frac{ \sqrt[9]{128} }{ \sqrt[9]{16} } = \sqrt[9 ]{ \frac{128}{16} } = \sqrt[9]{8} = \sqrt[9]{2 {}^{3} } = \sqrt[3]{2} [/tex]
