(4/x^2-4 + 1/2-x)*x^2+4x+4/3 Я вижу условие так:
4 1 x² + 4x + 4 4 1 (x + 2)²
(------------ + ----------) * ------------------ = ( ---------- - -----------) * ----------- =
x² - 4 2 - x 3 x² - 4 x - 2 3
4 - 1 * (x + 2) (x + 2)² (4 - x - 2)(x + 2)
= ---------------------- * ------------ = ------------------------ =
(x + 2)(x - 2) 3 (x - 2) * 3
(2 - x)(x + 2) x + 2 x + 2
= ------------------- = ----------- = - -----------
-3 * (2 - x) -3 3