To simplify the expression \( Vx^{20} \), we need to clarify what \( V \) represents. If \( V \) is a constant, then the expression remains as \( Vx^{20} \).
If \( V \) represents the square root function, or more generally, if it were intended to signify \( \sqrt{} \), then we interpret it as:
\[ Vx^{20} = \sqrt{x^{20}}. \]
We know that \( \sqrt{x^{20}} = x^{20/2} = x^{10} \).
Since you mentioned that \( x \) is a positive real number, we can simplify accordingly.
The final simplified expression, assuming \( V = \sqrt{} \), would be:
\[ x^{10}. \]
If \( V \) is simply a constant multiplier, then it remains as is:
\[ Vx^{20}. \]
Please clarify if there's a specific context for \( V \) that might lead to a different interpretation!