х+у=2
ху=-8
х=2-у
(2-у)*у=-8
y^2-2y-8=0
x=2-y
y1=4, y2=-2
x1=-2, x2=4
ответ: (-2; 4), (4; -2)
х+у=2ху=8х=2-у(2-у)*у=8х=2-уy^2-2y-8=0x=2-yy1=4, y2=-2Овет: x1=-2, x2=4y1=4, y2=-2
х+у=2
ху=-8
х=2-у
(2-у)*у=-8
х=2-у
y^2-2y-8=0
x=2-y
y1=4, y2=-2
x1=-2, x2=4
y1=4, y2=-2
ответ: (-2; 4), (4; -2)
х+у=2
ху=8
х=2-у
(2-у)*у=8
х=2-у
y^2-2y-8=0
x=2-y
y1=4, y2=-2
Овет: x1=-2, x2=4
y1=4, y2=-2