Tính lim

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Vậy. Tính lim

a) \(\lim_{x \to 2} (x^3 - 5x^2 + 7) =\)

b) \(\lim_{x \to 1} \left( \frac{1}{\sqrt{5 - x}} \right) =\)

c) \(\lim_{x \to \sqrt{3}} |x^2 - 4| =\)

d) \(\lim_{x \to -1} \sqrt{x - 2} =\)