If \(xy\ne 0\) and \(x^{y+1}=2x^y-1,\) what is the value of \(x?\)

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by Vincen » Tue Aug 17, 2021 7:14 am

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If \(xy\ne 0\) and \(x^{y+1}=2x^y-1,\) what is the value of \(x?\)

(1) \(x^y=x\)

(2) \(x^2=1\)

Answer: D

Source: GMAT Club Tests

Source: Beat The GMAT — Data Sufficiency | Tue Aug 17, 2021 7:14 am

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