Question

Perform the requested operation or operations.

f(x) = 4x + 7, g(x) = 3x2

Find (f + g)(x).

Answer 1

Help me Please I guess it's this but dont know if im right or no 12x3 + 21x

Answer 2

(f + g)(x). it just means f(x)+g(x)

Answer 3

Wait you mean i'm going to add and multiply

Answer 4

f(x)+g(x) What do you think?

Answer 5

I'm confused here is that the formula

Answer 6

@barbie15 so what you have got wann being f(g(x))

Answer 7

sorry the last term need being 21x^2

Answer 8

Okay, here it says (f+g)x, and not f(g(x)). Dont get confused. the latter one is a multiplication of both functions. as for your case its addition. just add up both functions.

Answer 9

Jhon where did u get that 21x^2

Answer 10

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

Answer 11

hope i helped. :)

Answer 12

so than you see what you have got there @barbie15

Answer 13

Thanks @LXelle

Answer 14

No problem. :)