Question

please

Answer 1

Let f(x) = x + 7 and g(x) = x – 2. What is f(x) • g(x)?

Answer 2

You're told f(x)= x+7.
That means that x+7 is the same as f(x).
Same goes for g(x).
So when they're asking you to multiply f(x) with g(x), what would you replace as f(x) and g(x)?

Answer 3

7 and -2?

Answer 4

Is 7 the same as f(x). What did I say is equal to f(x)?

Answer 5

x+7

Answer 6

So what would you replace as f(x)?

Answer 7

x+7? or 7x?

Answer 8

where'd you get 7x from?

Answer 9

Math is all about being realistic. If you did't know where you got 7x, then why would you even bring it out into thin air?

Answer 10

didn't*

Answer 11

x+7 is correct.

Answer 12

What would you replace g(x) then?

Answer 13

x-2

Answer 14

and sorry..im really horrible at math so i honestly didnt know...goodness lol

Answer 15

Okay that's correct though even if you're horriblea t math. You got it.

Answer 16

horrible at*

Answer 17

so then using what you just knew about f(x) and g(x):
\[f(x)\times g(x)=?\]

Answer 18

-14?

Answer 19

You didn't say anything about -14 beforehand, why now?

Answer 20

I'm just asking you to repeat what you said last time about what f(x) and g(x) is.

Answer 21

well because idk why i didnt..

Answer 22

ok, that make sense i think.
ok so if i got this right my answer would be x^2 + 5x – 14

Answer 23

Wowza, That's awesome! See, if you're actually thinking straight, you can do amazing things. That's absolutely correct!

Answer 24

why thank you :)