正数X,Y满足 X²-Y²=2XY,求X-Y/X+Y的值. 有过程..
若正数x,y满足x²-y²=2xy,求(x-y)/(x+y)的值
正数x,y满足x²-y²=2xy,求x-y/x+y的值
正数x,y满足x^2-y^2=2xy,求(x-y)/(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
正数x、y满足x平方减去y平方=2xy,求(x-y)/(x+y)的值
正数xy满足x2-y2=2xy,求x+y分之x-y的值
设x,y为正数,且满足x²-2xy-y²=0,求x-y\x+y的值.
1.已知正数x,y满足x2-y2=2xy,求(x-y)/(x+y)的值
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.
(1)正数x,y满足x^2-y^2=2xy,求(x-y)/(x+y)
正数x、y满足1/x+9/y=1 求xy的最小值?求x+2y的最小值?
已知正数xy满足x+2y=2,求1/x+1/y的最小值