Answer:
- 6x² - x + 9
Step-by-step explanation:
Given
(x² - 3x + 8) - (7x² - 2x - 1)
Distribute the first parenthesis by 1 and the second by - 1
= x² - 3x + 8 - 7x² + 2x + 1 ← collect like terms
= - 6x² - x + 9
