Question

Helppp plsssss!!show your work.
Thanks

Answer 1

The expression for
`(f+g)(x)` is simply the sum of the expressions of
`f(x)` and
`g(x)`.

So, you have

`(f+g)(x) = f(x) + g(x) = (3x^2-2x+4)+(5x^2+6x-8) = 8x^2+4x-4`

Answer 2

You are basically just adding, so combine like terms.

3x^2 + 5x^2 = 8x^2

6x - 2x = 4x

4 - 8 = -4

So the answer is D.