Эд Эдуард x^5 – 7x^3 + 12x = 0 x * (x^4 – 7x^2 + 12) = 0 x1 = 0 x^4 – 7x^2 + 12 = 0 Замена x^2 = y y^2 – 7y + 12 = 0 y1 = 4 x2 = 2 x3 = -2 y2 = 3 x3 = корень(3) х4 = -корень(3)