Дано
$$- y^{2} + x^{2} – x y = 19$$
x – y = 7
$$x – y = 7$$
Ответ
$$x_{1} = 4$$
=
$$4$$
=
=
$$4$$
=
4
$$y_{1} = -3$$
=
$$-3$$
=
-3
$$x_{2} = 17$$
=
$$17$$
=
=
$$17$$
=
17
$$y_{2} = 10$$
=
$$10$$
=
10
Численный ответ
x1 = 3.999999999999989
y1 = -3.000000000000011
x2 = 4.00000000000000
y2 = -3.00000000000000
x3 = 17.0000000000000
y3 = 10.0000000000000
x4 = 17.00000000000001
y4 = 10.00000000000001