化简求值,[(X²+ Y²-(X-Y)²+2Y(X-Y)]÷4Y=1,求4x/(4X²-Y²) - 1/(2X+Y )由[(X²+ Y²-(X-Y)²+2Y(X-Y)]÷4Y=1得 2x-y=2故4x/(4x²-y²)-1/(2x+y)=4x/(2x+y)(2x-y)-1/(2x...