Question

若x的2次方-2x+y的2次方+6y+10=0,求x,y的值.

Answer 1

x²-2x+y²+6y+10=0,

x²-2x+1+y²+6y+9=0,

(x-1)²+(y+3)²=0,

(x-1)²=0,(y+3)²=0,

x=1

y=-3