3x²+4y²-12x-8y+16=0
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3x²+4y²-12x-8y+16=0
3x²+4y²-12x-8y+16=0
3x²+4y²-12x-8y+16=0
解方程:3x^2 4y^2-12x-8y 16=0 3x^2 4y^2-12x-8y 16 =3(x-2)^2 4(y-1)^2 =0 x-2=0,y-1=0 x=2,y=1