Question

Express the following rational numbers with a negative exponent:

\[\left\{ \left( \frac{7}{3} \right)^4 \right\}^{- 3}\]

Answer 1

\[ \left\{ \left( \frac{7}{3} \right)^4 \right\}^{- 3} \]
\[ = \left( \frac{7}{3} \right)^{- 12} \left[ \because \left( a^m \right)^n = a^{mn} \right]\]