x^3-2x^2+3x-2=0 la ecuación
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Solución
Teorema de Cardano-Vieta
es ecuación cúbica reducida
$$p x^{2} + q x + v + x^{3} = 0$$
donde
$$p = \frac{b}{a}$$
$$p = -2$$
$$q = \frac{c}{a}$$
$$q = 3$$
$$v = \frac{d}{a}$$
$$v = -2$$
Fórmulas de Cardano-Vieta
$$x_{1} + x_{2} + x_{3} = - p$$
$$x_{1} x_{2} + x_{1} x_{3} + x_{2} x_{3} = q$$
$$x_{1} x_{2} x_{3} = v$$
$$x_{1} + x_{2} + x_{3} = 2$$
$$x_{1} x_{2} + x_{1} x_{3} + x_{2} x_{3} = 3$$
$$x_{1} x_{2} x_{3} = -2$$
Suma y producto de raíces
[src]
___ ___
1 I*\/ 7 1 I*\/ 7
1 + - - ------- + - + -------
2 2 2 2
$$\left(1 + \left(\frac{1}{2} - \frac{\sqrt{7} i}{2}\right)\right) + \left(\frac{1}{2} + \frac{\sqrt{7} i}{2}\right)$$
$$2$$
/ ___\ / ___\
|1 I*\/ 7 | |1 I*\/ 7 |
|- - -------|*|- + -------|
\2 2 / \2 2 /
$$\left(\frac{1}{2} - \frac{\sqrt{7} i}{2}\right) \left(\frac{1}{2} + \frac{\sqrt{7} i}{2}\right)$$
$$2$$
$$x_{1} = 1$$
___
1 I*\/ 7
x2 = - - -------
2 2
$$x_{2} = \frac{1}{2} - \frac{\sqrt{7} i}{2}$$
___
1 I*\/ 7
x3 = - + -------
2 2
$$x_{3} = \frac{1}{2} + \frac{\sqrt{7} i}{2}$$
x2 = 0.5 - 1.3228756555323*i
x3 = 0.5 + 1.3228756555323*i
x3 = 0.5 + 1.3228756555323*i