x^2 + y^2 = 61
+
x^2 - y^2 = -11
2x^2=50
x^2=50/2
x^2=25
x=+-5
25+y^2=61
y^2=61-25
y^2=36
y=+-6
ответ:х=+-5; у=+-6
x^2 + y^2 = 61
+
x^2 - y^2 = -11
2x^2=50
x^2=50/2
x^2=25
x=+-5
25+y^2=61
y^2=61-25
y^2=36
y=+-6
ответ:х=+-5; у=+-6