Question

Express $-\frac{8}{343}$ in power notation

Answer 1

$\frac{-8}{343}$

$=\frac{-2\times -2\times -2}{7\times 7\times 7}$

$=\frac{{(-2)}^3}{7^3}$

$={\left(\frac{-2}{7}\right)}^3$