Tutor.com Quadratic Equations Session

May. 22, 2012

  • Poor
  • Fair
  • Average
  • Good
  • Excellent
  • Click to rate this Poor
  • Click to rate this Fair
  • Click to rate this Average
  • Click to rate this Good
  • Click to rate this Excellent


Session Transcript - Math - Algebra, 5/12/2012 3:46PM - Tutor.comSession Date: 5/12/2012 3:46PM
Length: 13.6 minute(s)
Subject: Math - Algebra


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

Sutida (Customer)
[00:00:00] study guide

Jenna M (Tutor)
[00:00:08] Welcome to Tutor.com ! How can I help you today?
[00:00:12] Hello again!

Sutida (Customer)
[00:00:15] hey!
[00:00:28] solve the equation
[00:00:40] (r-3)(r+6)=0

Jenna M (Tutor)
[00:00:47] Great!
[00:01:18] Did you want me to check an answer or explain how to do this one?

Sutida (Customer)
[00:01:28] how to do this

Jenna M (Tutor)
[00:01:32] Great!
[00:01:42] okay now first of all, let me ask you this....
[00:02:07] what does any number equal if I multiply it by 0?

Sutida (Customer)
[00:02:19] 0

Jenna M (Tutor)
[00:02:22] right!
[00:02:27] so if one of these is 0
[00:02:41] then the whole equation is going to =0

Sutida (Customer)
[00:02:43] yep

Jenna M (Tutor)
[00:02:59] for a problem like this, you are going to have two answers for what r equals
[00:03:03] and we find them by doing this

Sutida (Customer)
[00:03:08] yes
[00:03:19] oh ok now i remember how to do this

Jenna M (Tutor)
[00:03:25]

Sutida (Customer)
[00:03:39] r=3 r=-6

Jenna M (Tutor)
[00:03:41] Yeah sometimes it just takes a second to remember
[00:03:47] You got it!

Sutida (Customer)
[00:03:45] yeah
[00:03:49] !

Jenna M (Tutor)
[00:03:53] Do you have any questions?

Sutida (Customer)
[00:04:03] can we do another one?

Jenna M (Tutor)
[00:04:07] For sure!
[00:04:13] Fire away!

Sutida (Customer)
[00:04:17] factor the trinomial
[00:04:26] g ^2 - 9g - 22
[00:04:38] isnt there no way to factor this

Jenna M (Tutor)
[00:04:55] let me look at for a second
[00:05:00] I'm working on this...

Sutida (Customer)
[00:04:57] oh wait no nevermin
[00:04:59] d

Jenna M (Tutor)
[00:05:05] Oh do you see it?
[00:05:14] Oh yup there I see it

Sutida (Customer)
[00:05:20] yeah u have to find factors of 22 to make 9

Jenna M (Tutor)
[00:05:27] right!
[00:05:50] now remember that 22 is negative so one of it's factors will be negative and the other will be positive

Sutida (Customer)
[00:05:53] -11 + 2

Jenna M (Tutor)
[00:05:59] You got it!
[00:06:15] Nice work!

Sutida (Customer)
[00:06:25] thanks

Jenna M (Tutor)
[00:06:29] Anytime!

Sutida (Customer)
[00:06:32] so u said fire away
[00:06:39] yeah well im not done yet

Jenna M (Tutor)
[00:06:45] Great!

Sutida (Customer)
[00:06:49] solve the trinomial eqation

Jenna M (Tutor)
[00:06:52] we have time still for more
[00:06:58] Oh wait
[00:07:04] for this one, it said to solve right?

Sutida (Customer)
[00:07:10] no

Jenna M (Tutor)
[00:07:15] Oh okay

Sutida (Customer)
[00:07:19] its ok
[00:07:27] for the next one it does though
[00:07:39] r ^ 2 - 18r + 56 =0
[00:07:50] is this the same as the other but we solve?

Jenna M (Tutor)
[00:08:07] Yup
[00:08:24] factor if you can, then solve like the first one
[00:09:09] Are you working on factoring it?

Sutida (Customer)
[00:09:37] yes

Jenna M (Tutor)
[00:09:52] great
[00:09:59] let me know if you get stuck

Sutida (Customer)
[00:10:12] i got 14 + 4 but it doesnt make -18

Jenna M (Tutor)
[00:10:38] You got the right numbers, but what if we made them both negative

Sutida (Customer)
[00:10:46] oh yes i see
[00:10:47] ok

Jenna M (Tutor)
[00:11:17] yeah those always look tricky when you have to make them both negative
[00:11:28] So do you remember how to find our answers for r?

Sutida (Customer)
[00:11:36] yes

Jenna M (Tutor)
[00:11:45] Great! what do you get?

Sutida (Customer)
[00:11:59] 4rr=14=

Jenna M (Tutor)
[00:12:07] You got it!
[00:12:14]
[00:12:19] I think we can do one more
[00:12:37] for this session anyway

Sutida (Customer)
[00:13:03] well i actually think that that is all i have a question on for now

Jenna M (Tutor)
[00:13:09] Great!
[00:13:15] 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! 

Sutida (Customer)
[00:13:14] thanks for all of your help!
[00:13:17] sure
[00:13:18] bye

Jenna M (Tutor)
[00:13:23] Anytime, you're doing great!

Sutida (Customer)
[00:13:24] have a great da

Jenna M (Tutor)
[00:13:26] Bye

Sutida (Customer)
[00:13:26] day

Jenna M (Tutor)
[00:13:29] thanks you too!

Sutida (Customer)
[00:13:28] thanks