Answer:
To simplify the given expression, let's combine like terms and simplify each term:
2b² - 4b + 1 - b² - b - 4b² - 2b + 6
Combine like terms:
(2b² - b² - 4b²) + (-4b - b - 2b) + (1 + 6)
Simplify each term:
(-3b²) + (-7b) + (7)
The simplified expression is:
-3b² - 7b + 7