Question

pff me ajudem é urgente
√8+√32+√72-√50
∛128+∛250+∛54-∛16

Answer 1

.
$\sqrt{8} + \sqrt{32} + \sqrt{72} - \sqrt{50} = \\ \\ \sqrt{2^2.2} + \sqrt{2^4.2} + \sqrt{2^2.2.3^2} - \sqrt{2.5^2} = \\ \\ 2 \sqrt{2} +4 \sqrt{2} +6 \sqrt{2} -5 \sqrt{2} = \\ \\ 12 \sqrt{2} -5 \sqrt{2} = \\ \\ 7 \sqrt{2}$

b)
$\sqrt[3]{128} + \sqrt[3]{250} + \sqrt[3]{54} - \sqrt[3]{16} = \\ \\ \sqrt[3]{2^6.2} + \sqrt[3]{2.5^3} + \sqrt[3]{2.3^3} - \sqrt[3]{2^3.2} = \\ \\ 2^2 \sqrt[3]{2} +5 \sqrt[3]{2} +3 \sqrt[3]{2} -2 \sqrt[3]{2} = \\ \\ (4+5+3) \sqrt[3]{2} -2 \sqrt[3]{2} = \\ \\ 12 \sqrt[3]{2} -2 \sqrt[3]{2} = \\ \\ 10 \sqrt[3]{2}$