Answer:
13x^2 - 18x + 9
Step-by-step explanation:
Step 1: Distribute the plus and minus signs
(4x^2 - 5x + 6) + (9x^2 - 2x) - (11x - 3)
4x^2 - 5x + 6 + 9x^2 - 2x - 11x + 3
Step 2: Combine like terms
4x^2 - 5x + 6 + 9x^2 - 2x - 11x + 3
13x^2 - 18x + 9
Answer: 13x^2 - 18x + 9
