x,y 满足x(x-2)-y(y-6)=-10,求x,y的值

已知x,y满足x^2+y^2-6x+8y+25=0,求y^x的值 若x、y满足2x+y=6,x-3y=1,求7y(x-3y)²-2(3y-x)³的值 如果x,y表示有理数,且x、y满足条件,|x|=5,|y|=2.|x-y|=y-x,求：x+2y的值. 已知实数x,y满足根号2x-y的值+5x-6=y-根号y-2x,求x,y的值 正整数x,y满足x2-y2=2xy,求x-y/x+y的值 整数x,y满足x2-y2=2xy,求x-y/x+y的值 已知x、y、z满足方程组：x+y-z=6；y+z-x=2；z+x-y=0 求x、y、z的值 已知x,y的值满足方程组x+2y=3,x-y=-2,求x/(x-y)²+x²-y²/(x+ 已知实数x,y满足(x+y)^2=1,(x-y)^2=25,求x,y的值 正数x,y满足x^2-y^2=2xy,求（x-y）/（x+y）的值 已知x,y满足y^4+2x^4+1=4x^2y,求x,y的值 若正数x,y满足x平方-y平方=2xy,求x-y除以x+y的值