0.803*10^(-4)*x^3+1.763*x-148.5=0 la ecuación
El profesor se sorprenderá mucho al ver tu solución correcta😉
Solución
Teorema de Cardano-Vieta
reescribamos la ecuación
$$\left(\frac{0.0001 \cdot 803}{1000} x^{3} + \frac{1763 x}{1000}\right) - \frac{297}{2} = 0$$
de
$$a x^{3} + b x^{2} + c x + d = 0$$
como ecuación cúbica reducida
$$x^{3} + \frac{b x^{2}}{a} + \frac{c x}{a} + \frac{d}{a} = 0$$
$$1 x^{3} + 21955.1681195517 x - 1849315.06849315 = 0$$
$$p x^{2} + q x + v + x^{3} = 0$$
donde
$$p = \frac{b}{a}$$
$$p = 0$$
$$q = \frac{c}{a}$$
$$q = 21955.1681195517$$
$$v = \frac{d}{a}$$
$$v = -1849315.06849315$$
Fórmulas de Cardano-Vieta
$$x_{1} + x_{2} + x_{3} = - p$$
$$x_{1} x_{2} + x_{1} x_{3} + x_{2} x_{3} = q$$
$$x_{1} x_{2} x_{3} = v$$
$$x_{1} + x_{2} + x_{3} = 0$$
$$x_{1} x_{2} + x_{1} x_{3} + x_{2} x_{3} = 21955.1681195517$$
$$x_{1} x_{2} x_{3} = -1849315.06849315$$
Suma y producto de raíces
[src]
69.1626458603302 + -34.5813229301651 - 159.821061835894*I + -34.5813229301651 + 159.821061835894*I
$$\left(69.1626458603302 + \left(-34.5813229301651 - 159.821061835894 i\right)\right) + \left(-34.5813229301651 + 159.821061835894 i\right)$$
$$0$$
69.1626458603302*(-34.5813229301651 - 159.821061835894*I)*(-34.5813229301651 + 159.821061835894*I)
$$69.1626458603302 \left(-34.5813229301651 - 159.821061835894 i\right) \left(-34.5813229301651 + 159.821061835894 i\right)$$
$$1849315.06849315$$
$$x_{1} = 69.1626458603302$$
x2 = -34.5813229301651 - 159.821061835894*I
$$x_{2} = -34.5813229301651 - 159.821061835894 i$$
x3 = -34.5813229301651 + 159.821061835894*I
$$x_{3} = -34.5813229301651 + 159.821061835894 i$$
x3 = -34.5813229301651 + 159.821061835894*i
x1 = -34.5813229301651 - 159.821061835894*i
x3 = -34.5813229301651 + 159.821061835894*i
x3 = -34.5813229301651 + 159.821061835894*i