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（x-y-5）^2+|x+6y+2|=0,则x-y^2=
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（x-y-5）^2+|x+6y+2|=0,则x-y^2=
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（x-y-5）^2+|x+6y+2|=0
（x-y-5）=0 x+6y+2=0
X=4 Y=-1
X-Y^2=3
（x-y-5）=0 x+6y+2=0
X=4 Y=-1
X-Y^2=3
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