已知实数x,y满足x²+4xy+4y²-x-2y+1/4=0 ,则x+2y 的值为?

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已知实数x,y满足x²+4xy+4y²-x-2y+1/4=0 ,则x+2y 的值为?

已知实数x,y满足x²+4xy+4y²-x-2y+1/4=0 ,则x+2y 的值为?
已知实数x,y满足x²+4xy+4y²-x-2y+1/4=0 ,则x+2y 的值为?

已知实数x,y满足x²+4xy+4y²-x-2y+1/4=0 ,则x+2y 的值为?
x^2+4xy+4y^2-x-2y+1/4=0
(x+2y)^2-(x+2y)+1/4=0
(x+2y-1/2)^2=0
x+2y-1/2=0
x+2y=1/2

x^2+4xy+4y^2-x-2y+1/4=0
(x+2y)^2-(x+2y)+1/4=0
(x+2y-1/2)^2=0
x+2y-1/2=0
x+2y=1/2

x²+4xy+4y²-x-2y+1/4=0
(x+2y)²-(x+2y)+1/4=0
(x+2y-1/2)²=0
x+2y-1/2=0
x+2y=1/2

x²+4xy+4y²-x-2y+1/4=0
(x+2y)²-(x+2y)+1/4=0
(x+2y-1/2)²=0
x+2y=1/2

x²+4xy+4y²-x-2y+1/4=0
即:(x+2y)²-(x+2y)+1/4=0
(x +2y-1/2)²=0
x+2y=1/2