Question

If (f + g)(x) = 3x2 + 2x – 1 and g(x) = 2x – 2, what is f(x)?
3x2 + 1
3x2 – 1
3x2 + 4
3x2 – 4
x2 – 2

Answer 1

(f + g)(x) - g(x) = f(x)

Answer 2

3x^2 + 2x – 1 - (2x – 2) = ?

Answer 3

i got 3x^2+4x-3

Answer 4

I did not get that.

Answer 5

You did not distribute the -1 in front of the parenthesis.

Answer 6

- (2x – 2) and 2x -2 are not the same thing.

Answer 7

so its 3x^2+1 ?

Answer 8

That is correct.