Explain the mistake that is made. Solve the equation x2/3

Chapter 1, Problem 103

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Explain the mistake that is made. Solve the equation x2/3 x1/3 20 0. Solution: u x1/3 u2 u 20 0 (u 5)(u 4) 0 x 5, x 4 This is incorrect. What mistake was made?

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