Question

Ajuda ae------------​

Answer 1

Resposta:

Alternativa C

Explicação passo-a-passo:

$\frac{2}{3} \times {8}^{ \frac{2}{3} } - \frac{2}{3} \times {8 }^{ - \frac{2}{3} } = \\ \\ \frac{2}{3} \times \sqrt[3]{ {8}^{2} } - \frac{2}{3} \times \frac{1}{ \sqrt[3]{ {8}^{2} } } = \\ \\ \frac{2}{3 } \times \sqrt[3]{64} - \frac{2}{3} \times \frac{1}{ \sqrt[3]{64} } = \\ \\ \frac{2}{3} \times 4 - \frac{2}{3} \times \frac{1}{4} = \\ \\ \frac{8}{3} - \frac{2}{12} = \\ \\ \frac{8}{3} - \frac{1}{6} = \\ \\ \frac{(2 \times 8) - 1}{6} = \\ \\ \frac{16 - 1}{6} = \\ \\ \frac{15}{6} = 2.5$