x的二次方加y的二次方加4x减6y加13等于0,则x、y的值为?

2025-05-09 14:29:14
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回答1:

X2-4X+Y 2+6Y+13=0(X-2)2+(Y+3)2=0∴有X-2=0,X=2 Y+3=0,Y=-3