Question

Find f(x)·g(x) if f(x) = 3x and g(x) = x + 1

Answer 1

Its just multiplying the two functions

Answer 2

so 3x*x+1 ?

Answer 3

Yes, but make sure you distribute

(3x)(x+1) makes it a little clearer to see

Answer 4

What you did to get 4x+1 was addition.

You want to use multiplication here.

Answer 5

You can rewrite it as 3x * x + 3x* 1

Answer 6

Make sure you multiply 3x by both terms in g(x). That's distributing.

For example 2x2=4, we know that.

Well, I could also write it as 2*(1+1)

If I don't distribute here, I'd get 2+1 which is 3. That's not right.

So instead multiply 2 by both 1's and get 2*2=2*(1+1)=2+2=4

Answer 7

Yeah, you got it, 3x^2 + 3x

Hope you get your reply button working again