Question

If f(x)=3x^2+4x+5
Evaluate
f(x+h)-f(x)/h

Answer 1

help

Answer 2

F(x+h)=3(x+h)^2+4(x+h)+5
F(x)=3x^2+4x+5

Answer 3

Find
F(x+h)-f(x)
-----------------
h

Answer 4

im confused

Answer 5

im getting a different answer when i solve

Answer 6

\[\frac{3(x+h)^2-3x^2+4(x+h)-4x+5-5}{h}\]

Answer 7

you mean distribute the negative through f(x)

Answer 8

\[\frac{3(x^2+2hx+h^2)-3x^2+4(x+h)-4x}{h}\]

Answer 9

Yes i mean exactly that

Answer 10

the answer by my teacher is 6x+3h+4 im not getting that

Answer 11

hello?

Answer 12

\[\frac{3x^2-3x^2+6hx+3h^2+4x-4x+4h}{h}\]

Answer 13

oh hold on

Answer 14

got it now thank you

Answer 15

Yw