Question

Let f (x)=7x^(2)+2x+3. Find f(x+h)-f(x)

Answer 1

First put in (x+h) in place of all the x's

Answer 2

I have done this problem several times and keep getting it wrong

Answer 3

[7(x+h)^2 + 2(x+h) +3]-(7x^2+2x+3)=

Answer 4

I got 14hx+7h^2+2x+2h-2x

Answer 5

and it was wrong

Answer 6

7(x^2+2xh+h^2)+2x+2h-7x^2-2x-3=

Answer 7

Like I said I keep doing it and I am not getting it right.. I think im burnt on this problem lol been over 30 minutes working on just this one

Answer 8

7x^2+14xh+7h^2+2h-7x^2-3=

Answer 9

14hx-3?

Answer 10

7h^2+14xh-3

Answer 11

if you miss it 3 times it gives you a new problem so i just missed it for the 3 rd time

Answer 12

but thanks

Answer 13

7h^2+14xh-2x-3. I left out a term