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#26 Re: Help Me ! » simplifying expressions » 2007-10-06 01:52:03

thank you so much. could you please also help me work this problem out?



The equation

|x/2| + |y/2| = 5

encloses a certain region on a coordinate plane. What is the area of this region?





thank you.

#27 Help Me ! » simplifying expressions » 2007-10-05 19:43:23

simone
Replies: 3

Please someone help me out!!!

I'm not able to simplify this expression:


(sqrt(9+sqrt(80)) + sqrt(9-sqrt(80)))^2


The result posted on the textbook I'm practicing on is 20, but I cannot get to it.

Thank you guys, the forum rocks!

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