To simplify the expression \( \frac{7^3}{25^{-4}} \) and rewrite it with only positive exponents, we can use the property of negative exponents, which states that \( a^{-n} = \frac{1}{a^n} \).
Starting with \( \frac{7^3}{25^{-4}} \):
- Rewrite \( 25^{-4} \) as \( \frac{1}{25^4} \): \[ \frac{7^3}{25^{-4}} = 7^3 \cdot 25^4 \]
Now, we have expressed the original expression using only positive exponents:
\[ \frac{7^3}{25^{-4}} = 7^3 \cdot 25^4 \]
Thus, the equivalent expression to \( \frac{7^3}{25^{-4}} \) with only positive exponents is:
7^3 x 25^4