Номер 240 1 и 4 пример плиз

Question

Номер 240 1 и 4 пример плиз

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Answer 1

1) (x+2)/(x-1)                              и                (x+1)/(x-2)
(x+2)(x-2)/(x-1)(x-2)                          (x+1)(x-1)/(x-2)(x-1)
   (x²-4)/(x-1)(x-2)                                     (x²-1)/(x-1)(x-2)

4) (x+1)/(x²-2x)                          и                 (4+x)/(x²-4)
    (x+1)/x(x-2)                                             (4+x)/(x-2)(x+2)
  (x+1)(x+2)/x(x-2)(x+2)                               x(4+x)/x(x-2)(x+2)