The expression \( x^3(2 + y^5) \) can be rewritten by distributing \( x^3 \) to both terms inside the parentheses:
\[ x^3(2 + y^5) = x^3 \cdot 2 + x^3 \cdot y^5 = 2x^3 + x^3y^5 \]
Therefore, the equivalent expression is:
\[ 2x^3 + x^3y^5 \]
If this is one of the response options, that would be the correct answer. Otherwise, if you have specific options available, please provide them, and I can help identify the equivalent one.