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948
help-10
bcfbf534208c4f419b45fafd6d8add8b
321,445,119,171,756,000
Shuri2060
02/27/2022 17:34:44
why would you multiply out lol
0
1
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null
null
null
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948
help-10
bcfbf534208c4f419b45fafd6d8add8b
321,445,119,171,756,000
Shuri2060
02/27/2022 17:34:54
🤦
0
1
null
null
null
null
null
948
help-10
bcfbf534208c4f419b45fafd6d8add8b
603,753,572,412,293,100
Hector Salamanca
02/27/2022 17:34:56
polynomial function with a degree of 3, leading coefficient 2, and zeroes 14, 1/2, and 9/2
1
0
null
null
null
null
null
948
help-10
bcfbf534208c4f419b45fafd6d8add8b
321,445,119,171,756,000
Shuri2060
02/27/2022 17:34:59
factorised form is simplified form
0
1
null
null
null
null
null
948
help-10
bcfbf534208c4f419b45fafd6d8add8b
373,884,980,977,336,300
Remavas
02/27/2022 17:35:00
Finding a polynomial of degree 3 with given leading coeff and 3 roots
0
1
null
null
null
null
null
948
help-10
bcfbf534208c4f419b45fafd6d8add8b
373,884,980,977,336,300
Remavas
02/27/2022 17:35:12
So why do it
0
1
null
null
null
null
null
948
help-10
bcfbf534208c4f419b45fafd6d8add8b
321,445,119,171,756,000
Shuri2060
02/27/2022 17:35:16
this answer is fine as is (get rid of the fractions if you like)
0
1
null
null
null
null
null
948
help-10
bcfbf534208c4f419b45fafd6d8add8b
603,753,572,412,293,100
Hector Salamanca
02/27/2022 17:35:22
I just saw that it said that
1
0
null
null
null
null
null
948
help-10
bcfbf534208c4f419b45fafd6d8add8b
373,884,980,977,336,300
Remavas
02/27/2022 17:35:22
Any form is correct, and this one is very useful too
0
1
null
null
null
null
null
948
help-10
bcfbf534208c4f419b45fafd6d8add8b
603,753,572,412,293,100
Hector Salamanca
02/27/2022 17:35:30
It was way at the bottom of the page
1
0
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null
null
null
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948
help-10
bcfbf534208c4f419b45fafd6d8add8b
373,884,980,977,336,300
Remavas
02/27/2022 17:35:40
since it immediately shows you the roots of the polynomial
0
1
null
null
null
null
null
948
help-10
bcfbf534208c4f419b45fafd6d8add8b
603,753,572,412,293,100
Hector Salamanca
02/27/2022 17:35:47
Yeah
1
0
null
null
null
null
null
948
help-10
bcfbf534208c4f419b45fafd6d8add8b
321,445,119,171,756,000
Shuri2060
02/27/2022 17:35:50
$y = 2(x-14)\left(x-\frac12\right)\left(x-\frac92\right)$
0
1
null
null
null
null
null
948
help-10
bcfbf534208c4f419b45fafd6d8add8b
510,789,298,321,096,700
TeXit
02/27/2022 17:35:53
**Shuri2060**
https://cdn.discordapp.c…119171756033.png
321445119171756033.png
0
1
null
null
null
null
null
948
help-10
bcfbf534208c4f419b45fafd6d8add8b
321,445,119,171,756,000
Shuri2060
02/27/2022 17:36:05
You can make this look nicer with a few simple steps though
0
1
null
null
null
null
null
948
help-10
bcfbf534208c4f419b45fafd6d8add8b
321,445,119,171,756,000
Shuri2060
02/27/2022 17:36:18
$y = \frac12(x-14)\left(2x-1\right)\left(2x-9\right)$
0
1
null
null
null
null
null
948
help-10
bcfbf534208c4f419b45fafd6d8add8b
510,789,298,321,096,700
TeXit
02/27/2022 17:36:30
**Shuri2060**
https://cdn.discordapp.c…119171756033.png
321445119171756033.png
0
1
null
null
null
null
null
948
help-10
bcfbf534208c4f419b45fafd6d8add8b
321,445,119,171,756,000
Shuri2060
02/27/2022 17:36:46
I divide everything by 1/4 and multiply each bracket with a fraction by 2
0
1
321,445,119,171,756,000
Shuri2060
9525
a μ-er
false
948
help-10
bcfbf534208c4f419b45fafd6d8add8b
603,753,572,412,293,100
Hector Salamanca
02/27/2022 17:37:12
I should do that?
1
0
603,753,572,412,293,100
Hector Salamanca
9867
Hector Salamanca
false
948
help-10
bcfbf534208c4f419b45fafd6d8add8b
321,445,119,171,756,000
Shuri2060
02/27/2022 17:37:22
You could. I think it looks nicer.
0
1
603,753,572,412,293,100
Hector Salamanca
9867
Hector Salamanca
false
948
help-10
bcfbf534208c4f419b45fafd6d8add8b
321,445,119,171,756,000
Shuri2060
02/27/2022 17:37:30
But this answer is perfectly fine
0
1
null
null
null
null
null
948
help-10
bcfbf534208c4f419b45fafd6d8add8b
603,753,572,412,293,100
Hector Salamanca
02/27/2022 17:37:51
I think I'll just stick with the original answer, I don't want to confuse myself lol
1
0
null
null
null
null
null
948
help-10
bcfbf534208c4f419b45fafd6d8add8b
603,753,572,412,293,100
Hector Salamanca
02/27/2022 17:37:57
Thank you for the help thogh
1
0
null
null
null
null
null
948
help-10
bcfbf534208c4f419b45fafd6d8add8b
373,884,980,977,336,300
Remavas
02/27/2022 17:38:07
Just don't put it into $ax^3 + bx^2 + cx + d$ form unless you really need to
0
1
null
null
null
null
null
948
help-10
bcfbf534208c4f419b45fafd6d8add8b
510,789,298,321,096,700
TeXit
02/27/2022 17:38:10
**Remavas**
https://cdn.discordapp.c…980977336321.png
373884980977336321.png
0
1
null
null
null
null
null
948
help-10
bcfbf534208c4f419b45fafd6d8add8b
373,884,980,977,336,300
Remavas
02/27/2022 17:38:21
It will be menial work with little to no point
0
1
null
null
null
null
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948
help-10
bcfbf534208c4f419b45fafd6d8add8b
603,753,572,412,293,100
Hector Salamanca
02/27/2022 17:38:29
Alright
1
0
null
null
null
null
null
948
help-10
bcfbf534208c4f419b45fafd6d8add8b
603,753,572,412,293,100
Hector Salamanca
02/27/2022 17:41:05
Thank yu
1
0
null
null
null
null
null
948
help-10
bcfbf534208c4f419b45fafd6d8add8b
714,483,444,394,229,900
Frosty_
02/27/2022 17:43:07
Alternatively use vieta if you want it in that form
0
1
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null
null
null
null
949
help-10
ec7df39a9edd4a5c92d75f9b8c089be3
107,901,991,748,919,300
sam
02/27/2022 18:32:55
https://cdn.discordapp.c…9220/unknown.png
unknown.png
1
0
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null
null
null
null
949
help-10
ec7df39a9edd4a5c92d75f9b8c089be3
107,901,991,748,919,300
sam
02/27/2022 18:33:14
I am to show this is true for all integers x
1
0
null
null
null
null
null
949
help-10
ec7df39a9edd4a5c92d75f9b8c089be3
107,901,991,748,919,300
sam
02/27/2022 18:33:19
Could I have a hint please?
1
0
null
null
null
null
null
949
help-10
ec7df39a9edd4a5c92d75f9b8c089be3
107,901,991,748,919,300
sam
02/27/2022 18:33:43
I think its probably pretty easy to do by induction if the exponent wasnt so large
1
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510,789,298,321,096,700
TeXit
0796
TeXit
true
949
help-10
ec7df39a9edd4a5c92d75f9b8c089be3
107,901,991,748,919,300
sam
02/27/2022 18:33:52
(expanding (x+1)^42 isnt fun)
1
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510,789,298,321,096,700
TeXit
0796
TeXit
true
949
help-10
ec7df39a9edd4a5c92d75f9b8c089be3
321,445,119,171,756,000
Shuri2060
02/27/2022 18:44:12
fermat might help.
0
1
null
null
null
null
null
949
help-10
ec7df39a9edd4a5c92d75f9b8c089be3
321,445,119,171,756,000
Shuri2060
02/27/2022 18:44:19
40 === -1 might also help
0
1
null
null
null
null
null
949
help-10
ec7df39a9edd4a5c92d75f9b8c089be3
107,901,991,748,919,300
sam
02/27/2022 18:49:26
40 == -1 might help indeed
1
0
null
null
null
null
null
949
help-10
ec7df39a9edd4a5c92d75f9b8c089be3
107,901,991,748,919,300
sam
02/27/2022 18:49:28
ill give it another shout
1
0
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null
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null
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949
help-10
ec7df39a9edd4a5c92d75f9b8c089be3
107,901,991,748,919,300
sam
02/27/2022 18:49:29
thx
1
0
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null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 18:52:48
hello
1
0
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null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 18:52:51
https://gyazo.com/41fa800e0be511f8595ed3d4834f59c3
1
0
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 18:53:06
for this question i used the sin area rule
1
0
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 18:53:59
sin^-1(12.5/(5x6x1/2))
1
0
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 18:54:16
i got 56.4
1
0
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 18:54:20
but its not obtuse
1
0
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
220,517,274,845,577,200
ramonov
02/27/2022 18:59:01
there are two solutions for x to sin(x) = c for 0<c<1 and 0<x<180°
0
1
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
220,517,274,845,577,200
ramonov
02/27/2022 19:00:12
using arcsin directly only gives one of them apply properties of the unit circle to get the other
0
1
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:00:22
hhmm
1
0
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:00:46
we ahvent learnt this yet
1
0
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
220,517,274,845,577,200
ramonov
02/27/2022 19:01:24
you should have
0
1
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:01:55
but algebraically its correct i dont know why its wrong
1
0
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:02:03
i used sin area rule
1
0
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
220,517,274,845,577,200
ramonov
02/27/2022 19:02:14
have you done questions like find all solutions to sin(t) = 1/2 for 0 < t < 360°
0
1
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:02:23
no
1
0
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:03:14
its a gcse question i think
1
0
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:03:15
this one
1
0
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
220,517,274,845,577,200
ramonov
02/27/2022 19:03:48
are you familiar with the supplementary identity for sine?
0
1
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:04:01
ah no
1
0
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:04:06
i know sin and sin^-1
1
0
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
220,517,274,845,577,200
ramonov
02/27/2022 19:04:08
sin(180°-x) = sin(x)
0
1
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:04:14
hmm
1
0
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:04:25
we havent got this far yet
1
0
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
373,884,980,977,336,300
Remavas
02/27/2022 19:04:30
Let me draw you something
0
1
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:04:37
this is grade 10
1
0
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
220,517,274,845,577,200
ramonov
02/27/2022 19:04:50
it seems you're the knowledge for this question
0
1
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
220,517,274,845,577,200
ramonov
02/27/2022 19:05:34
usually its something they'd give you after teaching you a decent amount about the unit circle
0
1
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:05:39
oh
1
0
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
373,884,980,977,336,300
Remavas
02/27/2022 19:05:54
https://cdn.discordapp.c…9236/unknown.png
unknown.png
0
1
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
373,884,980,977,336,300
Remavas
02/27/2022 19:06:06
crude but works
0
1
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:06:21
i see
1
0
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
373,884,980,977,336,300
Remavas
02/27/2022 19:06:44
Have you already learnt about the unit circle?
0
1
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
373,884,980,977,336,300
Remavas
02/27/2022 19:06:53
If not, this probably means nothing to you
0
1
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:06:55
no
1
0
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:07:02
yeah unforunately
1
0
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:07:03
https://gyazo.com/c9f946bf346fb9833c768d4c74cc9649
1
0
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:07:08
i just rearranged this
1
0
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:07:11
to get sinC
1
0
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:07:19
and do sin^-1(C)
1
0
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:07:27
but its wrong because the angle has to be obtuse
1
0
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
373,884,980,977,336,300
Remavas
02/27/2022 19:08:02
Well, Ramonov already told you something crucial
0
1
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
373,884,980,977,336,300
Remavas
02/27/2022 19:08:26
$\sin \alpha = \sin(180^{\circ} - \alpha)$
0
1
null
null
null
null
null
950
help-10
8d3e559c706247b38fb1130ced5d32f9
510,789,298,321,096,700
TeXit
02/27/2022 19:08:28
**Remavas**
https://cdn.discordapp.c…980977336321.png
373884980977336321.png
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1
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950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:08:34
hmm
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0
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950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:08:54
so i cant just just re arrange the equation
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950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:08:59
: /
1
0
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950
help-10
8d3e559c706247b38fb1130ced5d32f9
220,517,274,845,577,200
ramonov
02/27/2022 19:09:29
rearranging to sin(C) = stuff is fine
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950
help-10
8d3e559c706247b38fb1130ced5d32f9
220,517,274,845,577,200
ramonov
02/27/2022 19:10:00
you just need to be aware of the limitations of the inverse sine function
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950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:10:05
i see
1
0
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950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:10:14
it cant work for triangles?
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950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:10:19
obtuse angles**
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0
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950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:10:28
i assume
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0
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950
help-10
8d3e559c706247b38fb1130ced5d32f9
220,517,274,845,577,200
ramonov
02/27/2022 19:10:34
you'd need additional work
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950
help-10
8d3e559c706247b38fb1130ced5d32f9
220,517,274,845,577,200
ramonov
02/27/2022 19:11:04
and for that you'd consider properties of the unit circle and/or the identifed that come from it
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950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:11:22
yes
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950
help-10
8d3e559c706247b38fb1130ced5d32f9
220,517,274,845,577,200
ramonov
02/27/2022 19:11:42
specifically stuff like sin(180°-x) = sin(x)
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950
help-10
8d3e559c706247b38fb1130ced5d32f9
220,517,274,845,577,200
ramonov
02/27/2022 19:11:49
and in this case,
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950
help-10
8d3e559c706247b38fb1130ced5d32f9
220,517,274,845,577,200
ramonov
02/27/2022 19:12:11
the angle you want will be 180°-sin^-1(12.5/(5x6x1/2))
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950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:12:27
ah
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0
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950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:12:28
i see
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0
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950
help-10
8d3e559c706247b38fb1130ced5d32f9
270,606,727,907,508,220
mvoiddd
02/27/2022 19:12:36
thanks
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