已知實數(shù)x,y滿足x^2-2x+y^2-4y+5=0,求(x-y)^2的值
已知實數(shù)x,y滿足x^2-2x+y^2-4y+5=0,求(x-y)^2的值
數(shù)學(xué)人氣:813 ℃時間:2020-06-20 13:10:25
優(yōu)質(zhì)解答
x^2-2x+y^2-4y+5=0 (x-1)^2+(y-2)^2=0 x=1 y=2 (x-y)^2=1
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