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解方程x2+2xy+2y2-10x-16y+34=0
人气:289 ℃ 时间:2020-04-07 21:54:02
解答
x2+2xy+2y2-10x-16y+34=0
(x+y)^2-10(x+y)+y^2-6y+9+25=0
(x+y-5)^2+(y-3)^2=0
y=3,x=2
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