X^2+y2=20/xy=8 срочно

Question

X^2+y2=20/xy=8 срочно

Answer 1

(x+y)^2-2xy=20xy=8
(x+y)^2=20+16=36
x+y=6xy=8
x=4 y=2x=2 y=4
x+y=-6xy=8
x=-4 y=-2x=-2 y=-4