Mark M. answered 03/16/15
Tutor
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Retired math prof. Calc 1, 2 and AP Calculus tutoring experience.
x1/3 = x
Cube both sides: x = x3
So, x3 - x = 0
x(x2 - 1) = 0
x(x - 1)(x + 1) = 0
x = 0, 1, -1