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100 points for $49 worth of Veritas practice GMATs FREE VERITAS PRACTICE GMAT EXAMS Earn 10 Points Per Post Earn 10 Points Per Thanks Earn 10 Points Per Upvote ## Does ab = a^2 ##### This topic has 2 member replies ## Does ab = a^2 Does ab = a^2 (1) a^2 = b ^2 (2) a^3 = b ^3 [/spoiler]B Master | Next Rank: 500 Posts Joined 14 Nov 2012 Posted: 131 messages Followed by: 2 members Upvotes: 39 Test Date: 01/12/2013 Target GMAT Score: 700+ GMAT Score: NA Is ab = a^2 ?, This can be rephrased as Is a = 0 or a = b ? Statement 1) a^2 = b ^2 a = +b or - b, Not Sufficient!! Statement 2) a^3 = b ^3 a can only be equal to b, Sufficient!!! Answer B. Senior | Next Rank: 100 Posts Joined 12 Nov 2012 Posted: 85 messages Followed by: 2 members Upvotes: 8 Statement I: Possible solutions are a= b or a=-b. So, ab= a^2 or (-a^2). We cannot definitely answer the question. Not sufficient. Statement II: a^3 = b^3 means a=b. So, ab=a^2. Sufficient. • 5 Day FREE Trial Study Smarter, Not Harder Available with Beat the GMAT members only code • 1 Hour Free BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code • Free Trial & Practice Exam BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code • Get 300+ Practice Questions 25 Video lessons and 6 Webinars for FREE Available with Beat the GMAT members only code • Free Veritas GMAT Class Experience Lesson 1 Live Free Available with Beat the GMAT members only code • Award-winning private GMAT tutoring Register now and save up to$200

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