Question

Qual o valor de (7/9)-² ​

Answer 1

Resposta:

Explicação passo-a-passo:

(7/9)-²=> $(\frac{7}{9})^{-2} => \frac{1}{(\frac{7}{9})^{2} } => \frac{1}{\frac{49}{81}^{} } => 1.\frac{81}{49} => \frac{81}{49}$