Question

alguem poderia me dar as respostas?

Answer 1

$a) \ 3 \sqrt{20}= \sqrt{20\cdot 3^{2} }=\sqrt{20\cdot 9}= \sqrt{180} \\ \\b) \ 10 \sqrt[4]{7} = \sqrt[4]{7\cdot 10^4} =\sqrt[4]{7\cdot 100000} =\sqrt[4]{70000} \\ \\c) \ 5 \sqrt[3]{3} =\sqrt[3]{3\cdot 5^3}=\sqrt[3]{3\cdot 125}=\sqrt[3]{375}\\ \\d)\ 2 \sqrt[5]{1000} =\sqrt[5]{1000\cdot 2^5} =\sqrt[5]{1000\cdot 32} =\sqrt[5]{32000}$