Question

Racionalize: (Imagem abaixo)
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Answer 1

$\frac{2}{ \sqrt[3]{ {7}^{2} } }$

$\frac{2}{ \sqrt[3]{ {7}^{2} } } \times \frac{ \sqrt[3]{7} }{ \sqrt[3]{7} }$

$\frac{2 \sqrt[3]{7} }{ \sqrt[3]{ {7}^{2} \sqrt[3]{7} } }$

$\frac{2 \sqrt[3]{7} }{ \sqrt[3]{ {7}^{2} \times 2} }$

$\frac{2}{ \sqrt[3]{ {7}^{3} } }$

$\frac{2 \sqrt[3]{7} }{7}$