Math problem
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Neon
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PostPosted: Fri, 30th Apr 2010 18:31    Post subject:
It is wrong, you can't do that in an equation. It's like doing sth like this:

1-1 = 1000-1000
1(1-1) = 1000(1-1)

1=1000

Cool Face
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Frant
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PostPosted: Fri, 30th Apr 2010 18:34    Post subject:
I know Cool Face Cool Face

I just wanted to see if someone actually started working on it.. Wink


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me7




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PostPosted: Fri, 30th Apr 2010 18:42    Post subject:
ixigia wrote:
X/2=2X
X=4X
X-4X=0
X(1-4)=0
-3X=0
-3X+1/2=0+1/2
-6X+1=1
(-6X+1)^2=(1)^2
36X^2+1-12X=1
12X(3X-12)=0


X1=0
X2=4 shit we have one X different than 0 lol wut


You mean 12X(3X - 1) Smug
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ixigia
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PostPosted: Fri, 30th Apr 2010 18:59    Post subject:
Hahah yeah, though doesn't change much at the end Razz
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Acer




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PostPosted: Fri, 30th Apr 2010 19:20    Post subject:
Ok ok, dont think this is that complicated. Stupid ugly girl why did you have to put this on your profile. Now I have to ask her Razz


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me7




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PostPosted: Fri, 30th Apr 2010 19:22    Post subject:
The end doesn't matter. X is 0, What you do is equivalent to 12X : 12X = 1. You divide by 0, and the result of a division by 0 is bullshit anyway (as Neon25 demonstrated practically) since the division by 0 is undefined.
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VGAdeadcafe




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PostPosted: Fri, 30th Apr 2010 20:42    Post subject:
iNatan wrote:
Actually is not wrong. Confused

You can't square both parts of an equation. Because you don't know if their sign changes.

Otherwise you could do :
4 = 4
2^2 = (-2)^2
2=-2

ORLY ?
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me7




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PostPosted: Fri, 30th Apr 2010 20:45    Post subject:
VGAdeadcafe wrote:
iNatan wrote:
Actually is not wrong. Confused

You can't square both parts of an equation. Because you don't know if their sign changes.

Otherwise you could do :
4 = 4
2^2 = (-2)^2
2=-2

ORLY ?


You can square as you want, but you have to be careful with roots and consider both possible solutions.Your example is a root, not a square.
The problem is simply that he divided by 0 (see Neon25's post for an example).
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VGAdeadcafe




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PostPosted: Fri, 30th Apr 2010 20:46    Post subject:
me7 wrote:
You can square as you want, but you have to be careful with roots and consider both possible solutions.

Yes, but he didn't.
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me7




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PostPosted: Fri, 30th Apr 2010 20:48    Post subject:
He didn't use any root so there is nothing to consider.
Look at Neon25's post, that's what he did.
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LeoNatan
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PostPosted: Fri, 30th Apr 2010 21:20    Post subject:
VGAdeadcafe wrote:
iNatan wrote:
Actually is not wrong. Confused

You can't square both parts of an equation. Because you don't know if their sign changes.

Otherwise you could do :
4 = 4
2^2 = (-2)^2
2=-2

ORLY ?

YA RLY nubcake, he didn't do any roots, he took to the power of two, which is valid.

if A=B
then A^2 = B^2 is also true.


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Last edited by LeoNatan on Fri, 30th Apr 2010 21:40; edited 1 time in total
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VGAdeadcafe




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PostPosted: Fri, 30th Apr 2010 21:27    Post subject:
Oh, you're right, I confused squares,roots and shits.

I don't use english words or these symbols, that's why Very Happy

/me hides
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me7




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PostPosted: Fri, 30th Apr 2010 21:32    Post subject:
iNatan wrote:
YA RLY nubcake, he didn't do any squares, he took to the power of two....


Well "nubcake", square IS power of two Wink
What he didn't use are roots.
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LeoNatan
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PostPosted: Fri, 30th Apr 2010 21:33    Post subject:
Well at least I only confused the word Laughing, he confused ze math... Razz
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ixigia
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PostPosted: Fri, 30th Apr 2010 21:37    Post subject:
I suggest to close this thread and bury it forever Laughing .
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Frant
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PostPosted: Fri, 30th Apr 2010 21:38    Post subject:
LeoNerdan wrote:
YA RLY nubcake, he didn't do any squares, he took to the power of two

If that hadn't been so utterly geeky it would've been a good signature mocking quote... Laughing


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LeoNatan
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PostPosted: Fri, 30th Apr 2010 21:40    Post subject:
Laughing There I fixed it so you dont cry
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Frant
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PostPosted: Fri, 30th Apr 2010 21:42    Post subject:
iNatan wrote:
Laughing There I fixed it so you dont cry


Too late, the evidence of you nubcaking yourself in public has been recorded for all time... Razz


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LeoNatan
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PostPosted: Fri, 30th Apr 2010 21:45    Post subject:
You want me to go through your post history? I'm good at digging embarrassing stuff Laughing Ask Ronhrin
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Frant
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PostPosted: Sat, 1st May 2010 09:13    Post subject:


Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn!

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TSR69
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PostPosted: Sun, 2nd May 2010 02:10    Post subject:
ah well
x/2 = 2x
2*x/2 = 2*2x
x = 4x
x - x = 4x - x
0 = 3x
0/3 = 3x/3
x = 0 there solved (no dividing by x needed here)
but since the OP said 0 is not the solution I am very curious what the "real" solution is
also keep in mind that OP used a capital X

edit: btw try Alt+600 or Alt+0600 Smile
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