The solution to the problem using Associative Property is; 5x² + 5x + 9
The associative property of addition states that the sum of three or more numbers remains the same regardless of how the numbers are grouped.
For example, a + (b + c) = (a + b) + c. This means that no matter how the numbers are grouped, the sum of both the expressions remains the same.
We are given the expression;
(3x + 4) + (5x² - 1) + (2x + 6)
Using associative property, we have;
5x² + (3x + 2x) + (4 - 1 + 6)
⇒ 5x² + 5x + 9
Read more about Associative Property at; https://brainly.com/question/13181
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