Combine like terms
-13n² + 9n² = -4n²
-6n + (-3n) = -9n
- 4n² - 9n is your answer
hope this helps
Given: -6n-13^2-3n+9n^2
Combine like terms: -9n-4n^2
Rearrange into the proper order: -4n^2-9n
Your answer: -4n^2-9n
