55.
If $$y = \frac{{2 - x}}{{1 + x}},$$   then what is the value of $$\frac{1}{{y + 1}} + \frac{{2y + 1}}{{{y^2} - 1}}?$$

57.
Which of the following statement(s) is/are true.
$$\eqalign{ & {\text{I}}.\sqrt {64} + \sqrt {0.0064} + \sqrt {0.81} + \sqrt {0.0081} = 9.07 \cr & {\text{II}}.\sqrt {0.0010201} + \sqrt {98.01} + \sqrt {0.25} = 11.51 \cr} $$

59.
Which of the following is true?
$$\eqalign{ & {\text{I}}.\frac{1}{{\root 3 \of {12} }} > \frac{1}{{\root 4 \of {29} }} > \frac{1}{{\sqrt 5 }} \cr & {\text{II}}.\frac{1}{{\root 4 \of {29} }} > \frac{1}{{\root 3 \of {12} }} > \frac{1}{{\sqrt 5 }} \cr & {\text{III}}.\frac{1}{{\sqrt 5 }} > \frac{1}{{\root 3 \of {12} }} > \frac{1}{{\root 4 \of {29} }} \cr & {\text{IV}}.\frac{1}{{\sqrt 5 }} > \frac{1}{{\root 4 \of {29} }} > \frac{1}{{\root 3 \of {12} }} \cr} $$

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