X 2 10x 25 x 2 9 4x 20 2x 6 July 8, 2019 16 32 64 128 (x ^ 2 + 10x + 25)/(x ^ 2 - 9) / ((4x + 20)/(2x + 6)) при x = - 7 4/(x ^ 2 - 10x + 25) - 10/(x ^ 2 - 25) = 1/(x + 5)
