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b)
![\left(27^{\frac{1}{3}}+64^{\frac{1}{2}}-8^{\frac{2}{3}}+4^{\frac{1}{2}}\right)^{\frac{1}{2}}\\\left(\sqrt[3]{27}+\sqrt{64}-\sqrt[3]{8^2}+\sqrt{4}\right)^{\frac{1}{2}}\\\left(3+8-4+2\right)^{\frac{1}{2}}\\9^{\frac{1}{2}}=\sqrt{9}=3 \left(27^{\frac{1}{3}}+64^{\frac{1}{2}}-8^{\frac{2}{3}}+4^{\frac{1}{2}}\right)^{\frac{1}{2}}\\\left(\sqrt[3]{27}+\sqrt{64}-\sqrt[3]{8^2}+\sqrt{4}\right)^{\frac{1}{2}}\\\left(3+8-4+2\right)^{\frac{1}{2}}\\9^{\frac{1}{2}}=\sqrt{9}=3](https://tex.z-dn.net/?f=%5Cleft%2827%5E%7B%5Cfrac%7B1%7D%7B3%7D%7D%2B64%5E%7B%5Cfrac%7B1%7D%7B2%7D%7D-8%5E%7B%5Cfrac%7B2%7D%7B3%7D%7D%2B4%5E%7B%5Cfrac%7B1%7D%7B2%7D%7D%5Cright%29%5E%7B%5Cfrac%7B1%7D%7B2%7D%7D%5C%5C%5Cleft%28%5Csqrt%5B3%5D%7B27%7D%2B%5Csqrt%7B64%7D-%5Csqrt%5B3%5D%7B8%5E2%7D%2B%5Csqrt%7B4%7D%5Cright%29%5E%7B%5Cfrac%7B1%7D%7B2%7D%7D%5C%5C%5Cleft%283%2B8-4%2B2%5Cright%29%5E%7B%5Cfrac%7B1%7D%7B2%7D%7D%5C%5C9%5E%7B%5Cfrac%7B1%7D%7B2%7D%7D%3D%5Csqrt%7B9%7D%3D3)
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c)

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Espero ter ajudado!
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b)
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c)
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Espero ter ajudado!
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