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-   -   Please Help Me Simplify! TIA! (http://mymathforum.com/algebra/7163-please-help-me-simplify-tia.html)

mvho May 22nd, 2009 02:16 PM

Please Help Me Simplify! TIA!
 
Question: For x<0, simplify the following:
** Hint:







My Answer:





I know I can simplify further ( difference of sq. ) But this looks neater

mattpi May 22nd, 2009 02:48 PM

Re: Please Help Me Simplify! TIA!
 
You are partly correct - the expression will be negative for some values of But not for all - what if

mvho May 22nd, 2009 02:58 PM

Re: Please Help Me Simplify! TIA!
 
Quote:

ut not for all - what if
Hmm.. Not to sure. The question stated that, "For X<0 , simplify.." To be honest, I just threw the minus sign in there. Should it be plus/minus then?

Or, since it states, "For X<0, it should be a minus sign?

Confused. Thanks

mattpi May 22nd, 2009 03:26 PM

Re: Please Help Me Simplify! TIA!
 
Yep. Didn't spot the My bad :oops:

You were right, as long as

mvho May 22nd, 2009 03:34 PM

Re: Please Help Me Simplify! TIA!
 
No worries, at least I don't feel so crazy now.

Thanks!


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