It looks like you've uploaded an image containing a mathematical expression. Let me analyze it for you.

The expression appears to be a summation. Here is what I can interpret from it:

$\sum_{n=1}^{\infty} \frac{n(n-1)x^{n-2}}{1+n^3}$

This represents an infinite series, where the terms depend on $n$ and involve powers of $x$ and a denominator of $1+n^3$.

Would you like me to help simplify or analyze this expression further? Let me know if you want more details or need assistance with solving it.

Further questions:

1. How can we determine the convergence of this series?
2. What is the behavior of this series for large $n$?
3. Can we find a closed form for this summation?
4. How would this series behave for specific values of $x$?
5. How do the terms $n(n-1)$ affect the sum?

Tip: When dealing with infinite series, consider testing for convergence using tools like the ratio test or root test to understand whether the series converges for specific values of $x$.