xx+2x+yy+6y+10=0求xx+yy的值
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xx+2x+yy+6y+10=0求xx+yy的值
xx+2x+yy+6y+10=0求xx+yy的值
xx+2x+yy+6y+10=0求xx+yy的值
∵x²+2x+y²+6y+10=0
∴x²+2x+1+y²+6y+9=0
∴(x+1)²+(y+3)²=0
∴有x=-1,y=-3
所以,x²+y²=10
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