已知x²+2x+y²-10y+26=0,求x、y的值
问题描述:
已知x²+2x+y²-10y+26=0,求x、y的值
答
x²+2x+y²-10y+26=0
x²+2x+1-1+y²-10y+25-25+26=0
(x+1)²-1+(y-5)²+1=0
(x+1)²+(y-5)²=0
x= -1 y=5