помогите решить уравнение:
x^3 - 4x^2 - 7x + 28 = 0

x³ - 4x² - 7x + 28 = 0x²(x - 4 ) - 7(x - 4) = 0(x - 4)*(x² - 7) = 0x - 4 = 0x₁ = 4x² - 7 = 0x² = 7x₂ = - √7x₃ = √7