х^3-x^2-9x+9 = 0; x^2(x - 1) - 9(x - 1) = 0 (x^2 - 9)(x-1) = 0 x^2 - 9 = 0 или x -1 =0 x^2 = 9 x = 1 x = +3; -3 Ответ: +3, -3, 1