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PAB2706: Master | Next Rank: 500 Posts; Posts: 260; Joined: Sun Oct 12, 2008 8:10 pm; Thanked: 4 times

by PAB2706 » Thu May 14, 2009 4:58 am

m i missing some silly point

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Source: Beat The GMAT — Problem Solving | Thu May 14, 2009 4:58 am

DanaJ: Site Admin; Posts: 2567; Joined: Thu Jan 01, 2009 10:05 amFollowed by: 550 members; Thanked: 712 times; GMAT Score:770

by DanaJ » Thu May 14, 2009 5:35 am

y = 1/2 means that y^2 = 1/4. This makes x^2 = 1 - 1/4 = 3/4. So x is either sqrt(3/4) or -sqrt(3/4).

Since you don't have these answer choices, then the question must be wrong.

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