Question

B^ - 7 /B ^- 4 Б ^- 2 если B=-1/5​

Answer 1

$\frac{ - \frac{1}{5}^{ - 7} }{ - \frac{1}{5}^{ - 4} \times ( - \frac{1}{5}^{ - 2}) } = - \frac{ \frac{1}{5}^{ - 7} }{ \frac{1}{5}^{ - 6} } = - \frac{1}{ \frac{1}{5} } = - 5$

Ответ: –5.