The given expression in the image is:

$8xy^3 + x(x - y)^3$

Would you like to simplify or expand this expression, or perform any other operation on it?

Here are some follow-up options for exploring this expression:

1. Do you want to expand $x(x - y)^3$?
2. Should I factor the entire expression if possible?
3. Are you looking to solve for $x$ or $y$ given additional constraints?
4. Would you like to evaluate this for specific values of $x$ and $y$?
5. Do you want to graph this expression for different $x$ and $y$ values?

Tip: When dealing with powers or factoring, always check if there's a common factor to simplify first!