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xy=4; x-y=2

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Solución

Ha introducido [src]
x*y = 4
$$x y = 4$$
x - y = 2
$$x - y = 2$$
x - y = 2
Respuesta rápida
$$x_{1} = 1 - \sqrt{5}$$
=
$$1 - \sqrt{5}$$
=
-1.23606797749979

$$y_{1} = - \sqrt{5} - 1$$
=
$$- \sqrt{5} - 1$$
=
-3.23606797749979
$$x_{2} = 1 + \sqrt{5}$$
=
$$1 + \sqrt{5}$$
=
3.23606797749979

$$y_{2} = -1 + \sqrt{5}$$
=
$$-1 + \sqrt{5}$$
=
1.23606797749979
Respuesta numérica [src]
x1 = 3.23606797749979
y1 = 1.23606797749979
x2 = -1.23606797749979
y2 = -3.23606797749979
x2 = -1.23606797749979
y2 = -3.23606797749979