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vladmire: Master | Next Rank: 500 Posts; Posts: 132; Joined: Tue Oct 07, 2008 4:59 pm; Thanked: 4 times

by vladmire » Tue Feb 03, 2009 5:52 pm

x+1/x^2+2x - x+4/x^2+x = -3/x^2+3x+2

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Source: Beat The GMAT — Problem Solving | Tue Feb 03, 2009 5:52 pm

gaggleofgirls: Master | Next Rank: 500 Posts; Posts: 138; Joined: Thu Jan 15, 2009 7:52 am; Location: Steamboat Springs, CO; Thanked: 15 times

by gaggleofgirls » Tue Feb 03, 2009 11:01 pm

See attached file for solution - just too much strain on my eyes and brain to have all those ^2 and / in the same equation so the file has correct math formatting.

x = -7

What is OA?

Please include list of answers and OA when you post a question.

Thanks,
-Carrie

Attachments

x.doc: (86 KiB) Downloaded 146 times

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sfd2102: Newbie | Next Rank: 10 Posts; Posts: 5; Joined: Tue Feb 03, 2009 11:35 am

by sfd2102 » Wed Feb 04, 2009 11:33 am

I got x=2 or x=-2

work:
combine like terms:
3x+5/x^2=-3/x^2+3x+2
8/x^2=2
x^2=4
x=2 ; x=-2

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