Tutor.com Quadratic Equations Session

Mar. 21, 2012

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Session Transcript - Math - Algebra, 3/6/2012 10:41PM - Tutor.comSession Date: 3/6/2012 10:41PM
Length: 16.9 minute(s)
Subject: Math - Algebra


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

Jamie (Customer)
[00:00:00] can you explain quadratic formulas and help me with some problems?

Juliet M (Tutor)
[00:00:08] Hello and welcome to tutor.com
[00:00:12] How are you this evening?

Jamie (Customer)
[00:00:27] ok

Juliet M (Tutor)
[00:00:38] Is this your first time with us here at tutor.com ?

Jamie (Customer)
[00:00:41] yes

Juliet M (Tutor)
[00:00:48] Great. Welcome

Jamie (Customer)
[00:00:59] thank you

Juliet M (Tutor)
[00:01:02] If you have any questions on how this program works, please feel free to ask me

Jamie (Customer)
[00:01:07] ok

Juliet M (Tutor)
[00:01:09] we will do mostly typing here in the chat area

Jamie (Customer)
[00:01:13] ok

Juliet M (Tutor)
[00:01:19] we can write on the board to the right when needed.
[00:01:29] everything you write will instantly show up to me and vise versa
[00:01:53] the white board works like a drawing program... like the paint program
[00:01:59] Let's go ahead and get started.
[00:02:16] Did you have a specific problem you wanted help with this evening??

Jamie (Customer)
[00:02:16] i need heelp with the Quadratic formula solving equations

Juliet M (Tutor)
[00:02:28] I can help you with that.
[00:02:46] do you have a problem to solve using the quadratic equation?
[00:02:52] or did you need me to make one up for you?

Jamie (Customer)
[00:03:00] X2 +7x +5 =0
[00:03:07] x squared

Juliet M (Tutor)
[00:03:16] Great Problem. I am going to copy that to the board so we can take a look at it.
[00:03:47] the first thing you need to do when solving the quadratic equation is to identify a, b, and c

Jamie (Customer)
[00:03:58] all i know is a =1 b = 7 c-5

Juliet M (Tutor)
[00:04:06] PERFECT
[00:04:09] That is a great start
[00:04:32] do you know what the quadratic formula is?

Jamie (Customer)
[00:04:44] B+-
[00:04:47] no

Juliet M (Tutor)
[00:04:56] That's fine... I will write it down for us
[00:05:07] you will need to find out from your teacher if you need to memorize it or not...
[00:05:55] and there you have it
[00:06:10] we now know the formula AND what a, b, and c are equal too
[00:06:36] Don't forget the negative in front of the 7
[00:06:59] much better
[00:07:15] The board is tough to write on, you will get used to it
[00:07:34] keep in mind, this is not a pretty contest, I understand what you are writing, that is all that matters

Jamie (Customer)
[00:07:43] i dont get what to do now and thx

Juliet M (Tutor)
[00:07:46] You did an EXCELLENT job substituting a, b, and c
[00:07:51] At this point
[00:08:01] you want to take "baby steps" to start solving
[00:08:12] You may want to start by looking under the root
[00:08:33] I like to solve this first

Jamie (Customer)
[00:08:33] k

Juliet M (Tutor)
[00:08:51] the purple part second and then recopy
[00:09:33] perfect

Jamie (Customer)
[00:09:48] 7s=49

Juliet M (Tutor)
[00:09:53] PERFECT
[00:10:01] so let's recopy what we have. I can do that for you...
[00:10:36] and 2 *1 = ???

Jamie (Customer)
[00:10:40] 2

Juliet M (Tutor)
[00:10:44] great
[00:10:53] now... we can subtract under the radical...
[00:10:55] then recopy
[00:11:01] what is 49-20

Jamie (Customer)
[00:11:12] 29

Juliet M (Tutor)
[00:11:39] what can we do from this point?

Jamie (Customer)
[00:11:48] square the 29?

Juliet M (Tutor)
[00:11:59] is 29 a perfect square?

Jamie (Customer)
[00:12:04] nope

Juliet M (Tutor)
[00:12:16] are any factors of 29 a perfect square??

Jamie (Customer)
[00:12:28] i dont think so

Juliet M (Tutor)
[00:12:45] you are correct
[00:12:57] so there is really nothing you can do with the radical 29
[00:13:05] but the next step WAS to try.
[00:13:07] Good job there

Jamie (Customer)
[00:13:09]

Juliet M (Tutor)
[00:13:17] now there is only one thing left to do...
[00:13:25] and that is split this up into the two different solutions
[00:13:37] in other words, write the positive and negative results

Jamie (Customer)
[00:13:45] 7=29 divide by 2 and 7- 39divide by2
[00:13:52] 29
[00:14:02] i think

Juliet M (Tutor)
[00:14:12] I am not sure what you just wrote to do
[00:14:49] perfect, just forgot the radicals
[00:14:55] again, wonderful job
[00:15:00] those are your answers

Jamie (Customer)
[00:15:07] thx

Juliet M (Tutor)
[00:15:11] if you take it step by step
[00:15:14] it isn't so scary

Jamie (Customer)
[00:15:18] do you hvae time to do so more?

Juliet M (Tutor)
[00:15:19] just do a step and recopy
[00:15:44] I can only work one problem with you, but if you log back on, the next tutor will be with you shortly to answer your next question.
[00:15:51] Keep up the good work

Jamie (Customer)
[00:15:52] ok
[00:15:56] I got it! Thanks!

Juliet M (Tutor)
[00:15:58] 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! 
[00:16:08] Please take a moment to complete the survey.
[00:16:13] Good luck with the rest of your problems.
[00:16:22] Bye

Jamie (Customer)
[00:16:28] later