To use the Associative Property to group like terms in the expression \(9x + (2x + 3)\), you can rearrange the terms while maintaining their order.
Here's one way to group the like terms together:
\[ (9x + 2x) + 3 \]
This groups the \(9x\) and \(2x\) together, while keeping \(3\) as a separate term.