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= Lim (1 - x^(1/3))^2 / (x - 1)^2
= {Lim (x^(1/3) - 1) / (x - 1) }^2
= {Lim (x^(1/3) - 1) / (x^(1/3) - 1)(x^(2/3) + x^(1/3) + 1) }^2
= {Lim 1/(x^(2/3) + x^(1/3) + 1) }^2
= {1/(1 + 1 + 1) }^2
= {1/3}^2
= 1/9