Answer:
the A is right
Step-by-step explanation:
We have (f+g)(x) = f(x) +g(x)
So f(x) + g(x) = 3x^2 + 2x – 1 and we know g(x) = 2x -2
or f(x) + 2x-2 = 3x^2 + 2x – 1
f(x) = 3x^2 + 2x – 1 - ( 2x -2)
f(x) = 3x^2 + 2x – 1 - 2x +2 \
finally
f(x) = 3x^2 + 1, and the A is right.
Have a good day
