Answer:
9x³ - 11x² - 10x - 5
Step-by-step explanation:
Given
(9x³ - 7x - 3 - 5x²) - (6x² + 3x + 2) ← distribute by - 1
= 9x³ - 7x - 3 - 5x² - 6x² - 3x - 2 ← collect like terms
= 9x³ - 11x² - 10x - 5
