Question

Find f(2) and f(a + h) when f(x) = 3x^2 + 2x + 4

f(2)= 3(2)^2+2(2)+4 = 20
but i dont get the f(a+h)

f(a+h)= 3(a+h)^2+2(a+h)+4 right?

Answer 1

subtitution f=2
and f=(a+h)

Answer 2

f(2)= 3(2)^2+2(2)+4
f(a+h)=3(a+h)^2+2(a+h)+4
you can solve from here

Answer 3

@Nancy_Lam i already did f(2) i need help with simplifying the second one:
3(a+h)^2+2(a+h)+4

Answer 4

3(a+h)^2+2(a+h)+4
is easy to solve

Answer 5

3a+3h^2+2a+2h+4?

Answer 6

[3*(a+h)(a+h)] + [2a+2h] + 4
[3*( a^2+2ah+h^2)] + 2a+ 2h +4
can you solve from here?

Answer 7

is it 3a^2+2ah+2a+h^2+2h+4?

Answer 8

= 3a^2+3h^2+6ah+2a+2h+4

Answer 9

oh ok thank you! :)

Answer 10

nedal?