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Q&A #5432

Teachers' Lounge Discussion: Open-ended math questions

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From: pankaj <singh_pankaj_77@yahoo.com>
To: Teacher2Teacher Public Discussion
Date: 2005091920:50:32
Subject: query

Let a = 4000, b = 2000 and c = 6000

>   a + b =c Multiply both sides by a + b

>   (a + b) (a + b) = c (a + b)

>   a*a + ab + ba + b*b = ca + cb

>   a*a + ab - ca = cb - b*b - ba 

>   a( a + b -c) = -b(-c + b + a)

>

>  so

>

>  a = -b

>  a + b =0
...............

Where is the violation of mathematics rule..pls suggest.

--pankaj	

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