Tutor.com Polynomials Session

Dec. 3, 2013

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Session Transcript - Math - Algebra II, 11/6/2013 2:27PM - Tutor.comSession Date: 11/6/2013 2:27PM
Length: 15 minute(s)
Subject: Math - Algebra II

System Message
[00:00:00] *** Please note: All sessions are recorded for quality control. ***

Alayna (Customer)
[00:00:00] how do I multiply (2x+3) (4x-2)?

Jennifer M (Tutor)
[00:00:11] Welcome to Tutor.com ! How can I help you today?

Alayna (Customer)
[00:00:25] I cant figure this problem out

Jennifer M (Tutor)
[00:00:33] ok. I can help :)

Alayna (Customer)
[00:00:40] cool

Jennifer M (Tutor)
[00:00:48] What method have you learned to multiply binomials?

Alayna (Customer)
[00:01:09] i can't remember

Jennifer M (Tutor)
[00:01:18] Foil? or the box?

Alayna (Customer)
[00:01:27] i think foil

Jennifer M (Tutor)
[00:01:32] ok
[00:01:40] What does foil stand for?

Alayna (Customer)
[00:01:59] first, outer, inner, last

Jennifer M (Tutor)
[00:02:04] good!
[00:02:43] Which terms are the "first" terms?
[00:03:00] Good!
[00:03:10] So let's start by multiplying those
[00:03:41] ok, so I see that you did 2*4 = 8
[00:03:47] but how about x*x?
[00:03:58] there you go :)
[00:04:18] ok, now, you said that o stands for outer, so which terms are the outer terms
[00:04:44] Good...okay let's multiply those

Alayna (Customer)
[00:06:00] the last outer term< is that a negative 2 or a positive

Jennifer M (Tutor)
[00:06:03] well it is actually 2*-2
[00:06:06] negative 2

Alayna (Customer)
[00:06:09] oh

Jennifer M (Tutor)
[00:06:50] so now we are trying to multiply 2x times -2
[00:07:42] maybe you are thinking about addition by accident...
[00:07:57] 2*-2 = ?

Alayna (Customer)
[00:08:40] idk. a negative times a positive is a negative, right?

Jennifer M (Tutor)
[00:08:50] yes
[00:09:18] and 2*2 = 4
[00:09:31] good :)
[00:09:38] ok, now we are on inner
[00:09:44] which terms are the inner terms?
[00:09:52] good
[00:10:17] so we are multiplying 3*4x
[00:10:45] good...and since it is positive, let's put a plus sign in front of the 12
[00:11:06] ok, now last terms
[00:11:15] which terms are the last terms?
[00:11:50] Good job!

Alayna (Customer)
[00:11:59] is that my answer?

Jennifer M (Tutor)
[00:12:10] Is this completely simplified?

Alayna (Customer)
[00:12:31] no. we need to combine the like terms, right?

Jennifer M (Tutor)
[00:12:37] correct :)
[00:12:44] So which terms can we combine?
[00:13:21] Good job...so what is your final answer?
[00:13:44] yay! You did it!
[00:13:51] Does this make sense now?

Alayna (Customer)
[00:14:03] thx yeah it does :)

Jennifer M (Tutor)
[00:14:09] great!
[00:14:19] Thanks for using Tutor.com. Please fill out the survey as you leave so we can learn how we can better help you in the future! 

Alayna (Customer)
[00:14:26] k. thx