To simplify the given expression, we will combine like terms.
First, simplify the terms inside the parentheses:(x² + 4x) + (x² - x + 1) - (x² - x)= x² + 4x + x² - x + 1 - x² + x= 2x + 1
Therefore, the simplified expression is 2x + 1.
To simplify the given expression, we will combine like terms.
First, simplify the terms inside the parentheses:
(x² + 4x) + (x² - x + 1) - (x² - x)
= x² + 4x + x² - x + 1 - x² + x
= 2x + 1
Therefore, the simplified expression is 2x + 1.