Question

I don’t know how to solve number 8?

Answer 1

When you combine 6 and 4 and reorder the terms, it's 2c^2 - 5c + 10

Answer 2

All you have to do is combine the ones you circled (6 and 4). You leave the ones woth variables alone because one is squared while the other isn't. You're answer should be: 2c^2 - 5c + 10
Hoped this helped!