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May 22nd, 2009, 02:16 PM   #1
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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
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May 22nd, 2009, 02:48 PM   #2
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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
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May 22nd, 2009, 02:58 PM   #3
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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
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May 22nd, 2009, 03:26 PM   #4
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Re: Please Help Me Simplify! TIA!

Yep. Didn't spot the My bad

You were right, as long as
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May 22nd, 2009, 03:34 PM   #5
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Re: Please Help Me Simplify! TIA!

No worries, at least I don't feel so crazy now.

Thanks!
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