To simplify the expression, we can combine like terms.
2b² - b³ + 1 - b - 1 + b² - b + 1= 2b² + b² - b³ - b - b + 1 + 1= 3b² - b³ - 2b + 2
So, the simplified expression is 3b² - b³ - 2b + 2.
To simplify the expression, we can combine like terms.
2b² - b³ + 1 - b - 1 + b² - b + 1
= 2b² + b² - b³ - b - b + 1 + 1
= 3b² - b³ - 2b + 2
So, the simplified expression is 3b² - b³ - 2b + 2.