若x²+y²-2x-6y+10=0,求分式x²-y²/xy的值?

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若x²+y²-2x-6y+10=0,求分式x²-y²/xy的值?若x²+y²-2x-6y+10=0,求分式x²-y²/x

若x²+y²-2x-6y+10=0,求分式x²-y²/xy的值?
若x²+y²-2x-6y+10=0,求分式x²-y²/xy的值?

若x²+y²-2x-6y+10=0,求分式x²-y²/xy的值?
x²-2x+1+y²-6y+9=0
(x-1)^2+(y-3)^2=0
x=1,y=3
带入,算