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01242009, 11:39 AM  #1  
 
Class 3R Laser Join Date: Oct 2008 Location: So. Cal.
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Ok so start by letting X=1 Therefore X[sup]2[/sup]=X Subtract 1 from both sides (X[sup]2[/sup]1)=(X1) Difference of two squares (X+1)(X1)=(x1) Cancel out (X1) and we have (X+1)=1 Substitue 1 back in place of X and... 2=1 8) Tony
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01242009, 11:41 AM  #2  
 
Class 3R Laser Join Date: Oct 2008 Location: So. Cal.
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Rep Power: 124 
That is what happens when you.... : Well I'll let you figure it out. Tony
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01242009, 01:52 PM  #3  
 
Class 1 Laser Join Date: Nov 2008
Posts: 90
Rep Power: 9 
woah  
01242009, 05:10 PM  #4  
 
Class 4 Laser 
And that's my proof that study = fail
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01242009, 05:40 PM  #5  
 
Class 2M Laser Join Date: Feb 2008
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01242009, 07:15 PM  #6  
 
Cereal Eater  Wrong, [media]http://www.youtube.com/watch?v=II_DanHx3I&fmt=22[/media] you can't cancel out (X1) with (X1) because you stated that X=1, ergo (11)=0 and you can't do 0/0. Or this will happen:  
01242009, 08:28 PM  #7  
 
Class 2 Laser 
That reminds me of this 1 I just saw recently. Let a = x a+a = a+x (add a to both sides) 2a = a+x (a+a=2a) 2a2x = a+x2x (subtract 2x from both sides) 2(ax) = a+x2x (2a2x = 2(a=x)) 2(ax) = ax (x2x = x) 2 = 1 (divide both sides by ax)  
01242009, 09:41 PM  #8  
 
Cereal Eater  Quote:
It's the same thing. If a = x then (ax) <=> (xx) = 0, so you can't eliminate (ax) with (ax).  
01242009, 11:11 PM  #9  
 
Class 3R Laser Join Date: Dec 2007
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[s]Yup, just like you have to factor out binomials, you can't just "divide to cancel", you actually have to divide them. (ax)/(ax) is not equal to 1[/s] Nevermind, I suck at math, it's as Niko said. *You basically set yourself for a fallacy by assuming a = x in the beginning, which would then mean: a = x a  x = x  x a  x = 0 Therefore, (ax) = 0, then (ax)/(ax) = 0/0 and you cannot divide by zero (see above pictures).
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01252009, 02:15 AM  #10  
 
Class 3R Laser Join Date: Aug 2008 Location: Washington
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Yeah math fail. It will always either be a false answer or equal the original. The problem with algebra is that it always wins. Mark  
01252009, 02:41 AM  #11  
 
Cereal Eater  Quote:
 
01252009, 06:44 AM  #12  
 
Class 3R Laser Join Date: Oct 2008 Location: So. Cal.
Posts: 1,059
Rep Power: 124 
LOL! Yes dividing by zero can yield slightly odd results. So this is my 744th post! ;D Tony
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