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8
volunteer
Say that again.
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volunteer
So I, oh, whoops, I forgot to my eye here.
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volunteer
Um, I said,
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volunteer
A was -4 nights.
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volunteer
And B was
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volunteer
5 nights.
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volunteer
So then I just square, I did a squad, which is 16/81.
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volunteer
Um, it's supposed to be minus i^2 because I 2 is -1, so minus 25 or 81.
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volunteer
And uh
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volunteer
16 minus 25 is -9.
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volunteer
That's why I got the negative 1/9.
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volunteer
The of.
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volunteer
Um,
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volunteer
Did I get, oh, I see what you did wrong. I see what I did wrong. You're saying that
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volunteer
B is supposed to be.
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volunteer
You're right. So it should be a positive for nice.
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volunteer
You're positive for nights.
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volunteer
I guess it doesn't really matter?
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student
i am getting y=1 and -1/9
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volunteer
The calculations, cause I'm still squaring it.
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volunteer
You're getting win, you go to 1 and negative or nice.
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volunteer
From the Pythagorean identity.
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student
yeah
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volunteer
Like a theorem.
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volunteer
Hm.
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volunteer
All right, let me just delete all that. I got no room left.
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volunteer
Start over.
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student
noo
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volunteer
It's not good.
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volunteer
No
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volunteer
Sorry, I'm pretty decisive, unfortunately.
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volunteer
Uh
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student
you put the sign wrong
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volunteer
We said B.
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student
for b
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volunteer
Yeah, yeah, I was, I would try to fix B this time.
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volunteer
So it's 8 plus or minus the square root of 64 minus
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volunteer
Um, for A, which is 9C, which is -1.
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volunteer
All over.
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volunteer
Uh, 2 x 9.
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volunteer
So
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volunteer
8
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volunteer
Over 18 plus or minus.
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volunteer
Square root 9.
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volunteer
Over 18, which is 4/9 plus or minus.
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volunteer
Um, 10 or
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volunteer
5.
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volunteer
I.
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volunteer
Wait a minute.
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volunteer
That is not I.
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student
how are you getting i?
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volunteer
What am I doing? This is not a complex number then.
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student
yeah
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volunteer
I threw eye in there because I thought it was.
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volunteer
It's supposed to be a complex number, but now,
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volunteer
I'm throwing my hands in the sky.
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volunteer
I can, um, formula.
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volunteer
Is it?
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student
if you solve it further, you will get right values of y
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volunteer
If I saw it further, you will get right values of wine.
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volunteer
Oh, I see what you're saying. So, going from this,
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volunteer
If I have
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volunteer
4 + 5 is just 1.
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volunteer
And the other answer is 4 minus 5 is -19.
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volunteer
Did you get negative one night?
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volunteer
feel like you did. You got 1/81, which is much different than what
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student
yeah
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volunteer
We got earlier.
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volunteer
All right. And we know that one works.
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volunteer
Let's check. So, y.
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volunteer
This, oh, this is for why. Whoops.
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student
yup!
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volunteer
So, y
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volunteer
is equal to x.
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volunteer
You go to the square root of it, so we get the square root of one, which is one, and we get the square root of -1/9, which is just
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volunteer
I times the square root of 19, which is equal to
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volunteer
I over.
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volunteer
3
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volunteer
Does that make sense? Huh.
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student
no
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student
you have to squre -1/9
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student
it will be 1/81
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volunteer
Why do I, oh, you're right.
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volunteer
At the square, not square root, I went the opposite route.
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volunteer
So it just becomes 1/81.
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student
yeah'
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volunteer
Hm
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volunteer
She's like every instinct is telling me.
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volunteer
Something's wrong.
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volunteer
Or everything is right, but so we put we already tried 1/81.
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volunteer
The only way that it would work.
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volunteer
is if
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volunteer
If we take a square root of 1/81.
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volunteer
It's always gonna be positive unless
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volunteer
This had an eye on it, but we can't.
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volunteer
No, cause if you take the square root of -1/9
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volunteer
That won't give you anything.
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volunteer
It's like the square root or the square root.
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student
yeah
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volunteer
I feel like I'd put
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