实数x,y满足x²+y²+8x+6y+25=0,求x²+4xy+4y²分之x&#

实数x,y满足x²+y²+8x+6y+25=0,求x²+4xy+4y²分之x&# 已知x²+y²-8x+6y+25=0,求（x-y+4xy/x-y）（x+y-4xy/x+y） 已知实数x,y满足x²+y²-xy+2x-y+1=0 求x y 实数x y满足x≥y≥1和2x²-xy-5x+y+4=0求x+y之值 已知非零有理数x,y满足x²-4xy+4y²=0,求x-y/x+y-y-x/x+y的值. 已知实数x,y,z满足x²-6xy+10y²+4y+|z²-3z+2|+4=0,求(x+y 已知实数x,y满足x²-3xy+3y²+4x-18y+52=0求y的x次方的个位 已知实数x、y满足x²+y²+4x-6y+13=0 若实数XY满足方程X²-XY-2Y²+5x-4y+6=0试求x²+y²的最小值 已知实数xy,满足10x²-2xy+y²+6x+1=0,求x+y 已知实数x,y满足5x²+2y²+1=6xy+4x-2y,则x²-xy+2000y 若有理数X、Y满足x²-4x+y²+6y+13=0,求xy的值