apparently you don't understand

to find f(x + h) you replace all the x's in f(x) with x + h.

if , then

now, you know f(x) and f(x + h), so just plug them into the difference quotient formula.

try these yourself. post what you getOther problems I'm having trouble with

f(x)= 5x^2

f(x)= x^2+3x+9

I'm sure with a detailed explanation, i can solve these.

Thanks for yalls help