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 Subject: Not a Homework question Category: Science > Math Asked by: dprk007-ga List Price: \$5.00 Posted: 16 Oct 2006 16:13 PDT Expires: 15 Nov 2006 15:13 PST Question ID: 774182
 ```You know I was always bloody awful at Algebra when I was at school. One day I had to do this Algebra sum when I got into a dreadful muddle Here goes let a=b Then a**2=b**2 and a**2-b**2=0 and a**2-b**2=a**2-b**2 so (a+b)(a-b)=a**2-b**2 and further (a+b)(a-b)=a(a-b) and so of course (a+b) = a and (as a=b) 2a=a AND 1=2 oops Where did i go wrong???? DPRK007``` Request for Question Clarification by pinkfreud-ga on 16 Oct 2006 16:20 PDT ```Here's a similar problem with an explanation. Does this help? http://mathforum.org/library/drmath/view/55792.html``` Clarification of Question by dprk007-ga on 16 Oct 2006 16:35 PDT ```Very good and very Quick, Pink The internet though sometimes spoils all the fun (even thogh my notation was a bit different) DPRK007``` Request for Question Clarification by pinkfreud-ga on 16 Oct 2006 16:42 PDT ```Would the link that I posted be fully satisfactory as an answer? The concept is, I think, the same as your problem. The hidden error is a division by zero.``` Clarification of Question by dprk007-ga on 16 Oct 2006 16:50 PDT ```yip go for it```
 Subject: Re: Not a Homework question Answered By: pinkfreud-ga on 16 Oct 2006 17:07 PDT Rated:
 ```Thanks for accepting the link I posted as your official answer! I've seen this nifty 1=2 problem presented in many different ways, with the catch being that there is a disguised instance of dividing by zero. I used this search string to find an online reference: Google Web Search: "1=2" "divide OR dividing by zero" ://www.google.com/search?hl=en&q=%221%3D2%22+%22divide+OR+dividing+by+zero%22 Regarding the matter of the Internet spoiling the fun, I feel a bit guilty, so here is a mathish joke as an attempt to restore some of the fun: A statistician and two mathematicians go hunting. When they see a rabbit, the first mathematician shoots, missing it on the left. The second mathematician shoots and misses it on the right. The statistician shouts: "We've hit it!" Best regards, pinkfreud```
 dprk007-ga rated this answer: and gave an additional tip of: \$1.00 `Great Stuff, Pink`

 Subject: Re: Not a Homework question From: sublime1-ga on 16 Oct 2006 20:17 PDT
 ```You might enjoy knowing that Einstein himself worked on this problem: http://members.cox.net/sublime_1/einsteinshow.jpg```
 Subject: Re: Not a Homework question From: pinkfreud-ga on 16 Oct 2006 20:41 PDT
 `http://www.mortalwombat.com/Special/Thus_Do_I_Refute_Subbie.jpg`
 Subject: Re: Not a Homework question From: probonopublico-ga on 16 Oct 2006 21:21 PDT
 ```Wow, Pink, THAT (the image) was VERY clever. I bet that Subby will neverest until he can reciprocate. Bryo```
 Subject: Re: Not a Homework question From: sublime1-ga on 16 Oct 2006 23:43 PDT
 ```Naw, I was expecting such a web-wise woman to set our audience straight...especially since I left her such a searchable hint in the image name... ; )```
 Subject: Re: Not a Homework question From: pinkfreud-ga on 22 Oct 2006 12:49 PDT
 ```dprk007, Thanx for the five stars and the tip! ~pinkfreud```
 Subject: Re: Not a Homework question From: xceqter-ga on 22 Oct 2006 15:08 PDT
 ```so (a+b)(a-b)=a**2-b**2 and further (a+b)(a-b)=a(a-b) u start to load a=b here and so of course (a+b) = a and (as a=b) 2a=a here u load a=b one more time so u got that 2```