To find an expression equivalent to \( x^3(2 + y^5) \), we can distribute \( x^3 \) through 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
This corresponds to the response:
2x3 + x3y5
So, the correct answer is:
2 x cubed plus x cubed y superscript 5 baseline.