数学x²+y²-10x+12y+61=0,求x+y
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数学x²+y²-10x+12y+61=0,求x+y
![数学x²+y²-10x+12y+61=0,求x+y](/uploads/image/z/18840058-34-8.jpg?t=%E6%95%B0%E5%AD%A6x%26%23178%3B%2By%26%23178%3B-10x%2B12y%2B61%3D0%2C%E6%B1%82x%2By)
x²+y²-10x+12y+61=0
(x-5)²+(y+6)²=0
x-5=0,y+6=0
x=5,y=-6
所以
x+y=5-6=-1
(x-5)²+(y+6)²=0
x-5=0,y+6=0
x=5,y=-6
所以
x+y=5-6=-1
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