It seems you're working with the expression $3x^2 + 3y$. Let me break this down:

• $3x^2$ represents 3 times the square of $x$.
• $3y$ represents 3 times $y$.

This expression could be further manipulated or used in a larger problem, depending on the context. Would you like to clarify or proceed with solving or simplifying this expression further?

Let me know if you'd like more details or have any questions!

Here are some related questions:

1. What is the derivative of $3x^2 + 3y$ with respect to $x$?
2. How would you factor $3x^2 + 3y$?
3. What are the solutions to $3x^2 + 3y = 0$?
4. How does the graph of $3x^2 + 3y$ look in the xy-plane?
5. How would you solve for $x$ if given $3x^2 + 3y = c$?

Tip: Always check if expressions can be factored to simplify them before solving.