To simplify the expression \( x^3(2+y^5) \), we can distribute \( x^3 \) to both terms inside the parentheses:
- \( x^3 \cdot 2 = 2x^3 \)
- \( x^3 \cdot y^5 = x^3y^5 \)
So, the simplified expression becomes:
\[ 2x^3 + x^3y^5 \]
From the provided options, the equivalent expression is:
2x3+x3y5 (2 x cubed plus x cubed y to the power of 5).