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System Message

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

Guest (Customer)

[00:00:00] Approximate the zeros of the function. f(x)=x squared + 5x + 1

Constance G (Tutor)

[00:00:07] Welcome to Tutor.com !
Let's get started.

[00:00:08] hi

Guest (Customer)

[00:00:12] hi!

Constance G (Tutor)

[00:00:26] How do you find the zeros of a quadratic?

Guest (Customer)

[00:00:47] use the equation for axis of
symmetry?

Constance G (Tutor)

[00:01:06] that would help us if we were graphing.

[00:01:15] How can we do it without graphing?

Guest (Customer)

[00:01:33] you could factor it, but that
wouldn't work in this case..

Constance G (Tutor)

[00:01:52] you are correct, it won't work in this case but it is a method

Guest (Customer)

[00:02:05] we can use the quadratic

Constance G (Tutor)

[00:02:13] good

[00:02:27] when factoring doesn't work that is always a good choice

Guest (Customer)

[00:02:49] but if the question says
"approximate" do i still want
to use the quadratic?

Constance G (Tutor)

[00:03:31] yes because approximate suggests a value that has been rounded, like when you take a square root.
If you factor you can get an exact answer.

Guest (Customer)

[00:03:38] ok

[00:04:22] so the quadratic is x=-b
squared +/- the square root of
b squared -4ac all over 2a,
correct?

Constance G (Tutor)

[00:04:43] the first b is not squared

Guest (Customer)

[00:04:46] oh ok

[00:05:00] perfect, thank you

Constance G (Tutor)

[00:05:28] go ahead and get the numbers in and see what happens.

Guest (Customer)

[00:05:29] ok

Constance G (Tutor)

[00:06:15] keep going you are doing fine

[00:06:45] don't forget the -5 is also over the 2

[00:06:56] right

Guest (Customer)

[00:07:10] then do i set one of them to
positive and one to negative?

Constance G (Tutor)

[00:07:17] yes

Guest (Customer)

[00:07:56] isn't that as far as i can go for
the one on the right?

Constance G (Tutor)

[00:08:18] until you use a calculator to find the square root yes.

[00:09:10] good

[00:09:33] almost done with that one

[00:08:32] You got it!

[00:09:46] now for the other answer

[00:09:56] You got it!

[00:11:10] great job

Guest (Customer)

[00:11:12] thanks for your help!

Constance G (Tutor)

[00:11:29] you did all the work I just helped along the way

Guest (Customer)

[00:11:37] i appreciate it, thanks again

Constance G (Tutor)

[00:11:45] my pleasure

[00:11:50] Thanks for using Tutor.com.Â Please fill out the survey as you leave so we can learn how we can better help you in the future!Â

[00:11:55] have a good evening

Guest (Customer)

[00:11:57] you too! goodbye

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[00:12:05] *** Lost connection from Guest (Customer). Waiting for reconnect... ***