Question

Help its due today!!

Answer 1

C

Explanation:

line up 'like terms' below each other:

5
`x^(2)` + 9x + 3

- 6
`x^(2)` + 3x + 0

remember, when you subtract then you 'add the opposite'

5
`x^(2)` + 9x + 3

+ -6
`x^(2)` + 3x - 0

-
`x^(2)` + 12x + 3

Answer 2

go with the 3rd one! its the best choice