Question

calcule o resultado da seguinte potencia (3/7)-3​

Answer 1

$\large\left ( \dfrac{3}{7} \right ) ^{ - 3} = \\ \\ \large\left ( \dfrac{7}{3} \right ) ^{ 3} = \: \: \\ \ \\ \large \frac{7 {}^{3} }{3 {}^{3} } = \: \: \: \: \\ \\ \large \boxed{ \red{ \frac{343}{27} }} \: \: \: \:$

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