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NationalTutoringObservatory
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MathEd-PII

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8
student
and then
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student
that's it
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student
That's the answer.
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volunteer
Yeah, that looks right to me. So let me see.
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volunteer
Um.
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volunteer
Yeah
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833
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volunteer
Mm.
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volunteer
Right
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volunteer
12. Yes, that's right.
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volunteer
So that, that would be your final answer if they asked you to solve it.
16,143
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volunteer
or to simplify it
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volunteer
then you would have that as your
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volunteer
it would become a different function
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volunteer
essentially, when you do this composite.
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volunteer
but
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volunteer
you put the pieces together.
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volunteer
to make the whole thing
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student
Mhm
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volunteer
so that the important step is, is substitution.
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volunteer
So when, when you see this F of G of X.
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volunteer
you're substituting G
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volunteer
wherever you see X
16,143
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volunteer
that whole thing. This could be a very long or different function.
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volunteer
I don't know what it, what it could be, but that's, that's the idea.
16,143
851
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volunteer
If, if they ask you to do
16,143
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volunteer
so what would the first step be if they asked you G of F of X
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volunteer
composite of F or G of F of X.
16,143
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volunteer
How would that be different
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[]
student
It's just like we switched them all around, that's it. We just switch
16,143
856
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student
right?
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volunteer
Yeah, so what would it
16,143
858
[]
volunteer
what would it be
16,143
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[]
volunteer
That's F of GFX.
16,143
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volunteer
cause they might ask you this too, your teacher might put this. She might ask for the other way. So what, what is the other way?
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student
we just switched it, so we, uh, 3 and then 3x minus 2.
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862
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student
or minus 3 x minus 22.
16,143
863
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student
Just switch it up
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volunteer
Uh, could you write it down? Cause I couldn't see.
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student
Yeah, of course.
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866
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student
So measure if it's
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student
can I delete it
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volunteer
Yeah
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student
Right
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[]
student
So if it's up G X
16,143
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student
W 3
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student
as I said
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student
3
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student
and then 3.
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student
3
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student
minus
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student
we
16,143
878
[]
student
most
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volunteer
Mhm
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student
And that's it. After that, we just stop it.
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volunteer
Yeah.
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volunteer
That's the most important step, is that
16,143
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volunteer
That's probably half of it, I think.
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volunteer
Well, once you know how to do that, then it shouldn't be impossible.
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student
Yeah
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student
It.
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student
What is the 19 it's my.
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volunteer
Mhm
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volunteer
So, can you simplify that any further?
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student
No
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volunteer
Yeah.
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volunteer
So that's what we were talking about in the
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volunteer
I forget which problem, but
16,143
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volunteer
whenever there are different exponents, you cannot
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volunteer
add or subtract them
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volunteer
Well, that would be the final
16,143
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volunteer
final expression
16,143
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volunteer
Uh
16,143
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volunteer
yeah, that's about it
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volunteer
Did you need help with anything else?
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student
No
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volunteer
OK. So just keep practicing whatever your teacher gives you.
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volunteer
and then
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volunteer
you should be prepared with the.
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volunteer
with the rest of it
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student
All right
16,143
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volunteer
Mhm
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volunteer
OK
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volunteer
Nothing else
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student
No, nothing else
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volunteer
OK. Well, have a good rest of your day.
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volunteer
and I hope you learned something.
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volunteer
OK.
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student
Yeah
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volunteer
Bye.
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student
OK
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volunteer
Hello
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student
hi
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volunteer
what do you think about b?
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volunteer
Hello?
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student
yes
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volunteer
what do you think about b?
16,273
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student
all value of x should equal 0
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volunteer
I am not sure what you mean. they are asking for which value of x does g(x)=0
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volunteer
can you point to the places where g(x)=0
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volunteer
Yes, that's right. What are the values of x at those two points?
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