решите уравнение плиз Х в кубе +Х в квадрате-4Х-4=0
x^3 + x^2 - 4x - 4 = 0
x^2 (x + 1 ) - 4 (x +1) = 0
(x+1) (x^2 - 4) = 0
x+2 = 0 i x^2 - 4 = 0
x = - 2 i (x+2)(x-2) = 0
x + 2 = 0 i x - 2 = 0
x= - 2 x = 2
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x^3 + x^2 - 4x - 4 = 0
x^2 (x + 1 ) - 4 (x +1) = 0
(x+1) (x^2 - 4) = 0
x+2 = 0 i x^2 - 4 = 0
x = - 2 i (x+2)(x-2) = 0
x + 2 = 0 i x - 2 = 0
x= - 2 x = 2