RT x^2+2x+y^2-6y+10=0 求x^2y^3
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RTx^2+2x+y^2-6y+10=0求x^2y^3RTx^2+2x+y^2-6y+10=0求x^2y^3RTx^2+2x+y^2-6y+10=0求x^2y^3x^2+2x+y^2-6y+10=0(
RT x^2+2x+y^2-6y+10=0 求x^2y^3
RT x^2+2x+y^2-6y+10=0 求x^2y^3
RT x^2+2x+y^2-6y+10=0 求x^2y^3
x^2+2x+y^2-6y+10=0
(x^2+2x+1)+(y^2-6y+9)=0
(x+1)^2+(y-3)^2=0
平方大于等于0,相加等于0,若有一个大于0,则另一个小于0,不成立
所以两个都等于0
所以x+1=0,y-3=0
x=-1,y=3
x^2y^3
=(-1)^2*3^3
=1*27
=27
一看以为是个圆方程，仔细一看原来是个点圆。。
配方：
(x+1)^2+(y-3)^2=0
所以x=-1,y=3
则x^2y^3=27
(x^2+2x+1)+(y^2-6y+9)=0
(x+1)^2+(y-3)^2=0
x=-1 y=3
x^2=1 y^3=27
x^2y^3=27
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