将已知等式变形为:
m2x2+m2y2-2mxy-2mny+y2+n2=0,
(m2x2-2mxy+y2)+(m2y2-2mny+n2)=0,
即(mx-y)2+(my-n)2=0.
∴
mx−y=0
my−n=0,
∵m≠0,
∴y=
n
m,x=
n
m2.
将已知等式变形为:
m2x2+m2y2-2mxy-2mny+y2+n2=0,
(m2x2-2mxy+y2)+(m2y2-2mny+n2)=0,
即(mx-y)2+(my-n)2=0.
∴
mx−y=0
my−n=0,
∵m≠0,
∴y=
n
m,x=
n
m2.