x^4-29x^2+100=0 решить уравнение

x^4-29x^2+100=0Пусть t = x^2t^2 - 29t + 100 = 0D = 841 - 400 = 441 = 21^2t1 = (29 + 21)/2 = 25t2 = (29-21)/2 = 4t1 = 25 = x^2 => x1 = 5  x2 = -5t2 = 4 = x^2 => x3 = 2 x4 = -2Ответ: -5;-2;2;5