Need help with 8 and 9
will give BRAINLIEST if you are right

Answer:
8) 10c² - 2c + 5
9) 5a²b² - ab²
Step-by-step explanation:
8c² - c + 3 + 2c² - c + 2 =
10c² - 2c + 5
6a²b² + 3ab² - a²b² - 4ab² =
5a²b² - ab²