【(X²+Y²)-(X-Y)²+2Y(X-Y)】/4Y=1,求4X/4X²-Y²-1/2X-Y的值
问题描述:
【(X²+Y²)-(X-Y)²+2Y(X-Y)】/4Y=1,求4X/4X²-Y²-1/2X-Y的值
答
没有
答
请问,要求的那个是什么?是三个还是繁分数?
之前的式子,全部展开,化简
答
【(X²+Y²)-(X-Y)²+2Y(X-Y)】/4Y=1,【2xy+2Y(X-Y)】/4Y=14x-2y=42x-y=24X/(4X²-Y²)-1/(2X-Y) =4X/(4X²-Y²)-(2x+y)/(4X²-Y²)=(2x-y)/(4X²-Y²)=1/(2...