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Grex Reality Item 59: Is my math book wrong or am I just stupid???
Entered by eprom on Wed May 1 04:11:47 UTC 2002:

This:

3X^2 (Y-1) + (Y-1)^2
----------   -------
  6U^2V^3     2UV^2

somehow is suppose to be able to be simplified down to:


 X^2
--------
UV(Y-1)


I can't see it.

4 responses total.

#1 of 4 by jp2 on Wed May 1 13:48:25 2002:

This response has been erased.

#2 of 4 by amazon on Fri May 3 17:12:49 2002:

Could you please retype the expressions using more grouping symbols? Your
denominator on the leftmost fraction is 6U^2V^3. Does this mean (6U)(2V)^3?
An expression is rarely qritten the way you have it expressed. This could be
part of your problem.

#3 of 4 by i on Sat May 4 15:08:09 2002:

Unless there are other constraints here, i don't see any way that this
could work out.  Try plugging in values of U=1, V=1, and X=1, then look
at values of Y very near (but slightly above) 1.  The first expression 
approaches zero as Y approaches 1, but the second (simplified) one is 
approaching infinity as Y approaches 1.  It would take more than some
simple how-the-factors-and-exponents-are-associated changes to alter
this behavior.

#4 of 4 by eprom on Thu May 9 03:06:45 2002:

Thanks!!!!!

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