Write the product using exponents. \( 4 \cdot 4 \cdot x \cdot x \cdot x=\square \)

The expression \( 4 \cdot 4 \cdot x \cdot x \cdot x \) can be simplified using exponents. Since \( 4 \) appears twice, we can write it as \( 4^2 \), and for \( x \) which appears three times, we can express it as \( x^3 \). Thus, the product is \( 4^2 \cdot x^3 \).