Final answer:
When simplifying the expression 4x³ + 9y² - 3x + 2 - 1, we combine the constants to get 4x³ + 9y² - 3x + 1, resulting in four terms.
Step-by-step explanation:
To simplify the expression 4x³ + 9y² - 3x + 2 - 1, we need to combine like terms wherever possible.
Looking at the expression, we have terms involving x and y, as well as constant numbers. Since there are no like terms other than the constants, we just need to combine the constant terms 2 and -1.
Adding 2 and -1 gives us 1. Therefore, the simplified expression becomes 4x³ + 9y² - 3x + 1.
In conclusion, the simplified expression has four terms.