Please help!

Given f(x)=4x^2+3x-5 and g(x) = -2x+12, find (fg)(x)

Thank you!

Question

Please help!

Given f(x)=4x^2+3x-5 and g(x) = -2x+12, find (fg)(x)

Thank you!

e.mccormick · Answer

Did you mean to close this right after posting it?

anonymous · Answer

No! It was an accident. Sorry!

e.mccormick · Answer

np.

Is that a composition, as in fog(x) where the o is really a small circle?

anonymous · Answer

attachment

e.mccormick · Answer

Ah, OK.

e.mccormick · Answer

That should be multiplication.

e.mccormick · Answer

So basically $fg(x)$ means  $(4x^2+3x-5)(-2x+12)$

e.mccormick · Answer

Do that multiplication and you have the answer.  If you want a double check, post it here.

anonymous · Answer

Ooooo. I see now.

e.mccormick · Answer

Yah, half the battle is figuring out what the heck the queston means!  Math has very specific meanings for things like the order of functions in a list, $\in$, $\therefore$, and so on.  You end up needing to learn them as you go just to make sense of the questions!