1.求x2+y2-4y-6=0与x2+y2-5x+y-6=0的交点.2.求证:(x2+y2-4y-6)+m(x2+y2-
2个回答
(3,3)和(-1,-1)
x2+y2-4y-6=0
x2+y2-5x+y-6=0
解得(3,3)和(-1,-1)
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