The expression \( y \cdot x \cdot x \cdot x \) can be condensed using exponents as follows:
Since \( x \) is multiplied by itself three times, we can express this as \( x^3 \).
Thus, the expression can be written as:
\[ y \cdot x^3 \]
So, the condensed form is \( y \cdot x^3 \).