"Ignoramus14363" <ignoramus14363@NOSPAM.14363.invalid> wrote in message

news:bdwSe.98947$(E-Mail Removed).. .

> On Sat, 3 Sep 2005 22:47:50 -0700, Keith Keller

> <(E-Mail Removed)-francisco.ca.us> wrote:

>> On 2005-09-03, Ignoramus14363 <ignoramus14363@NOSPAM.14363.invalid>

>> wrote:

>>>

>>> On 03 Sep 2005 22:51:13 GMT, (E-Mail Removed) <(E-Mail Removed)>

>>> wrote:

>>>>

>>>> Also, it doesn't give the right answer.

>>>>

>>>> "Text form: ((x^2-6x+9)/(x^2-3x-10))/((x^2-5x+6)/(x^2-8x+15))

>>>> simplifies to

>>>> (x-3)/(x+2)"

>>>>

>>>> No, it doesn't.

>>>

>>> I will appreciate corrections and suggestions. What's the right answer

>>> there?

>>

>> If you can't figure it out on paper, why are you writing a program to do

>> it? Sheesh, I might as well go write an OS! :-\

>

> Let me know when you have something useful and substantial to say,

> okay?

>

> (hint, I did solve it on paper)

>

> If you can explain why the above simplification is incorrect, I would

> appreciate hearing that.

>

> i

>
The error in the explanation this example is at the line:

'Canceled out common factors (x-(3)),(x-(3))'

Where (1) is left in each case instead of (x-3) and (x-2) in numerator and

denominator respectively.

The explantion would be clearer if you showed the factorisation before the

cancellation, and this error would have been more obvious too.

Hope this helps

Dave