Question

Perform the requested operation or operations.

f(x) = 4x + 7, g(x) = 3x^2

Find (f + g)(x).

Answer 1

4x + 7 + 3x^2

Answer 2

Almost. You lost the "f(x) = " and you probably shoudl re-arrange to standard form.

Answer 3

would it be 12x^3 +21x

Answer 4

wait sorry no 4x+7-3x^2

Answer 5

No. You must learn to recognize "like" terms.

x + x = 2x

2x^2 + x^2 = 3x^2

3x^2 - x cannot be simplified.

The total of all variable exponents is an important part of "like" term.

Answer 6

4x+7/3x^2

Answer 7

@tkhunny

Answer 8

I'm pretty puzzled by this. You had it right in the first place. Why did you try four other things after that? Why would it lead to division?! I suggested ONLY that you work on your notation.