If $x^2 + y^2 = 29,$ what is the value of $(x - y)^2?$ - The Beat The GMAT Forum

If $x^2 + y^2 = 29,$ what is the value of $(x - y)^2?$

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VJesus12: Legendary Member; Posts: 2276; Joined: Sat Oct 14, 2017 6:10 amFollowed by: 3 members

by VJesus12 » Fri Aug 06, 2021 8:16 am

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If $x^2 + y^2 = 29,$ what is the value of $(x - y)^2?$

(1) $xy = 10$
(2) $x = 5$

Answer: A

Source: Official Guide

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Source: Beat The GMAT — Data Sufficiency | Fri Aug 06, 2021 8:16 am

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