Final answer:
To find and simplify the expression f(x) = 5x² - 9x + 9, combine like terms if possible and leave the expression as is.
Step-by-step explanation:
To find and simplify the given expression f(x) = 5x² - 9x + 9, we can follow these steps:
- Combine like terms: 5x² - 9x + 9 has no like terms, so we leave it as is.
- There are no further simplifications that can be done, so the expression remains 5x² - 9x + 9.