来自沈晔的问题
非零实数x、y满足(x2+2009-x)(y2+2009-y)=2009,则x+2008y2008x+y=______.
非零实数x、y满足(
x2+2009-x)(
y2+2009-y)=2009,则x+2008y2008x+y=______.
1回答
2020-01-31 12:07
非零实数x、y满足(x2+2009-x)(y2+2009-y)=2009,则x+2008y2008x+y=______.
非零实数x、y满足(
x2+2009-x)(
y2+2009-y)=2009,则x+2008y2008x+y=______.
当x+y=0,即x=-y时,(
x