Xy = 6
y = 6/X
X не равен 0
y^2 = 36 / x^2
x^2 + ( 36 / x^2 ) - 13 = 0
( х^4 + 36 - 13х^2 ) / х^2 = 0
Х^2 = а ; а > 0
а^2 - 13а + 36 = 0
D = 169 - 144 = 25 ; VD = 5
a1 = ( 13 + 5 ) : 2 = 9
a2 = ( 13 - 5 ) : 2 = 4
X(1;2 ) = (+/-) 3
X(3;4 ) = (+/-) 2
y = 6 / X
y(1;2) = (+/-) 2
y(3;4) = (+/-) 3
Ответ ( 3 ; 2 ) ; ( - 3 ; - 2 ) ; ( 2 ; 3 ) ; ( - 2 ; - 3 )