x^2 +Y^2 = 169
(x+y)^2 = 169 - 120
(x+y)^2 = 49
x+y = 7 x+y= -7
xy = 60 xy =60
x= 7-y x = -7-y
-y^2 +7y -60 =0 -y^2 -7y -60= 0
корней нет
x^2 +Y^2 = 169
(x+y)^2 = 169 - 120
(x+y)^2 = 49
x+y = 7 x+y= -7
xy = 60 xy =60
x= 7-y x = -7-y
-y^2 +7y -60 =0 -y^2 -7y -60= 0
корней нет