If $x(x + 1) = x + 1,$ what are all the possible values of $x?$

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Gmat_mission: Legendary Member; Posts: 1622; Joined: Thu Mar 01, 2018 7:22 amFollowed by: 2 members

by Gmat_mission » Fri Oct 16, 2020 8:28 am

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If $x(x + 1) = x + 1,$ what are all the possible values of $x?$

A. -1 only
B. 0 only
C. 1 only
D. -1 and 0
E. -1 and 1

Answer: E

Source: GMAT Prep

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Source: Beat The GMAT — Problem Solving | Fri Oct 16, 2020 8:28 am

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