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What is this I don't even  Algebraic "proof" that 2+2=5

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LOON_ATTIC
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What is this I don't even  Algebraic "proof" that 2+2=5
fucking algebra, how does it work
Can anyone find a flaw on this thing? I couldn't. It's when s/he takes square roots of both sides and adds 9/2 that my mind blows.
THEY'RE STILL BOTH EQUAL TO 1/4 or 0.25 WHEN CALCULATEDS, without doing shit to both sides.
But what the fuck. What s/he did wasn't illegal, you know?


04292011 04:18 PM 

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Hannahchan
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Re: What is this I don't even  Algebraic "proof" that 2+2=5
The mistake is when she adds 8.25 to both sides  she pulls the figure from nowhere, and it messes up the balance of the sum. The figures added should be different.
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04292011 06:13 PM 

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Re: What is this I don't even  Algebraic "proof" that 2+2=5
using this same math anything can equal whatever you want. Its called dividing by zero. What Dividing by zero DOES do is prove math wrong altogether, but some asshole just decided to say "LOL NUP U CUNT DU THUT"


04302011 07:51 AM 

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Thought Criminal
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Re: What is this I don't even  Algebraic "proof" that 2+2=5


04302011 12:08 PM 

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LOON_ATTIC
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Re: What is this I don't even  Algebraic "proof" that 2+2=5
Dividing by zero? Different figures?
I though it was taking the square root of a negative number, after thinking about it some more. But meh.


04302011 12:21 PM 

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Re: What is this I don't even  Algebraic "proof" that 2+2=5
It's a mathematical fallacy. It will work with any set of numbers.


04302011 12:30 PM 

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Re: What is this I don't even  Algebraic "proof" that 2+2=5
is it bad that i didn't get any of that


04302011 07:27 PM 

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Re: What is this I don't even  Algebraic "proof" that 2+2=5
BaronVonStrangle Wrote:is it bad that i didn't get any of that
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05022011 01:39 PM 

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SaintVicious
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Re: What is this I don't even  Algebraic "proof" that 2+2=5


05022011 02:14 PM 

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xenoknight
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Re: What is this I don't even  Algebraic "proof" that 2+2=5
This "proof" ignores the negative roots. You must account for the negative root.
Let's test the final result though(just for fun):
2+2 = 5
2+25 = 0
45 = 0

1 = 0
^untrue statement
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05042011 06:22 AM 

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Re: What is this I don't even  Algebraic "proof" that 2+2=5


07122011 12:37 AM 

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Efs
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Re: What is this I don't even  Algebraic "proof" that 2+2=5
The only Math I do is work out the amount of rage I feel when I go to Math class.
(01102012 02:15 PM)Maelstrom Wrote: Efs, your nihilism is beautiful.


07122011 12:42 AM 

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Re: What is this I don't even  Algebraic "proof" that 2+2=5
Hannahchan Wrote:The mistake is when she adds 8.25 to both sides  she pulls the figure from nowhere, and it messes up the balance of the sum.
This.
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07122011 11:35 AM 

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Re: What is this I don't even  Algebraic "proof" that 2+2=5
UnschoolShqiponjë Wrote:Hannahchan Wrote:The mistake is when she adds 8.25 to both sides  she pulls the figure from nowhere, and it messes up the balance of the sum.
This.
No, that part is actually valid; you can add or subtract the same number from both sides of an equation without affecting the equality.
If you imagine a very simple equation,
x = y
And then add some arbitrary value to both sides,
x + 4 = y + 4
x + (5) = y + (5)
x + 5/3 = y + 5/3
It's pretty clear that the equation remains true. And since you can let x and y stand for some particular values (even values represented by more complicated expressions), you can tell how it remains true in the general case.
Like other people said, the actual problem is with the step where you take the square root.
You can simplify the expression
(4  9/2)^2 = (5  9/2)^2
to
(1/2)^2 = (1/2)^2
and that is obviously true. But since for some arbitrary value x, both x*x and x*x give the value x^2, to preserve the equality you have to take the absolute value of each side. So,
(4  9/2) = (5  9/2)
1/2 = 1/2
1/2 = 1/2
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07182011 02:11 PM 

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Prince Rilian
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Re: What is this I don't even  Algebraic "proof" that 2+2=5
It's because square roots have two answers.
(1)^2 = 1 and (1)^2 = 1, oh no this must mean that 1 = 1 !
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07182011 02:43 PM 

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07182011 03:53 PM 

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Re: What is this I don't even  Algebraic "proof" that 2+2=5
Absentinsomniac Wrote:Conclusions?
MATHS HURT BRAAAAAIN.


07192011 05:14 AM 

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LOON_ATTIC
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Re: What is this I don't even  Algebraic "proof" that 2+2=5
Prince Rilian Wrote:It's because square roots have two answers.
(1)^2 = 1 and (1)^2 = 1, oh no this must mean that 1 = 1 !
dis
Because basically thing above means that (1/2)*2 = ((1/2))*2 (when * is a power of something).
The things that are squared are brought to be the same absolute value but one positive and the other negative after being factored.
This just brings a problem when taking square roots of shit (or quadruple, sextuple, so on) when solving/simplifying equations, I guess the thing that's being squared always has to be positive?
Hopefully not absolutely everyone's head will explode after reading this


07192011 05:37 AM 

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Re: What is this I don't even  Algebraic "proof" that 2+2=5


07232011 07:30 AM 

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Re: What is this I don't even  Algebraic "proof" that 2+2=5
Lunatic Wrote:Prince Rilian Wrote:It's because square roots have two answers.
(1)^2 = 1 and (1)^2 = 1, oh no this must mean that 1 = 1 !
dis
Because basically thing above means that (1/2)*2 = ((1/2))*2 (when * is a power of something).
The things that are squared are brought to be the same absolute value but one positive and the other negative after being factored.
This just brings a problem when taking square roots of shit (or quadruple, sextuple, so on) when solving/simplifying equations, I guess the thing that's being squared always has to be positive?
Hopefully not absolutely everyone's head will explode after reading this
That's why when you're solving an equation with even roots, you have to put plus or minus, you have include both possibilities.
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07232011 07:54 AM 

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Re: What is this I don't even  Algebraic "proof" that 2+2=5
LOL! Now ima gonna PROLLY trol at maths sayng that 2+2=5.
Then ima gonna prove to my teacher that its true.
Btw nice vid Thought Criminal


08042011 03:38 PM 

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RE: What is this I don't even  Algebraic "proof" that 2+2=5
look it's pretty simple sqrt(x^2) is not equal to x but equal to x therefore when he put sqrt passing from step 3 > 4 he forgot the 


03092015 01:04 AM 

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What is this I don't even  Algebraic "proof" that 2+2=5
Mather...why did you even bump this thread? Please look at the date of the last post before posting...
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03112015 06:42 AM 

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What is this I don't even  Algebraic "proof" that 2+2=5
How the fuck???
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What is this I don't even  Algebraic "proof" that 2+2=5
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