Question

gente é pra hoje socorro​

Answer 1

${( - \frac{2}{7} )}^{2} = ( - \frac{2}{7}) \times ( - \frac{2}{7}) = \frac{4}{49}$

${ (- \frac{1}{ \frac{1}{2} }) }^{3} = {( - \frac{1}{1} \times \frac{2}{1}) }^{3} = {( - 2)}^{3} = \\ \\ ( - 2) \times ( - 2) \times ( - 2) = - 8$