Simplifying the Expression: (x² + 4x + 4) - (x² - 6x + 9)
This expression involves subtracting two quadratic trinomials. Let's break down the process of simplifying it step-by-step.
1. Distributing the Negative Sign
First, we need to distribute the negative sign in front of the second set of parentheses. This means multiplying each term inside the parentheses by -1:
(x² + 4x + 4) - (x² - 6x + 9) = x² + 4x + 4 - x² + 6x - 9
2. Combining Like Terms
Now, we can combine the terms with the same variable and exponent:
x² - x² + 4x + 6x + 4 - 9
Simplifying further:
10x - 5
Final Result
Therefore, the simplified form of the expression (x² + 4x + 4) - (x² - 6x + 9) is 10x - 5.