作业帮(X-Y/X+2Y)÷[(X²-Y²/X²+4XY+4Y²)-2]其中x=2+根号3,y=2-根号3.X-Y/X+2Y÷X²-Y²/X²+4XY+4Y²-2 其中x=2+根号3，y=2-根号3.上面的不算
来源：学生作业帮助网 编辑：作业帮 时间：2024/04/28 23:48:13
![(X-Y/X+2Y)÷[(X²-Y²/X²+4XY+4Y²)-2]其中x=2+根号3,y=2-根号3.X-Y/X+2Y÷X²-Y²/X²+4XY+4Y²-2 其中x=2+根号3，y=2-根号3.上面的不算](/uploads/image/z/4503395-11-5.jpg?t=%28X-Y%2FX%2B2Y%29%C3%B7%5B%28X%26%23178%3B-Y%26%23178%3B%2FX%26%23178%3B%2B4XY%2B4Y%26%23178%3B%29-2%5D%E5%85%B6%E4%B8%ADx%3D2%2B%E6%A0%B9%E5%8F%B73%2Cy%3D2-%E6%A0%B9%E5%8F%B73.X-Y%2FX%2B2Y%C3%B7X%26%23178%3B-Y%26%23178%3B%2FX%26%23178%3B%2B4XY%2B4Y%26%23178%3B-2+%E5%85%B6%E4%B8%ADx%3D2%2B%E6%A0%B9%E5%8F%B73%EF%BC%8Cy%3D2-%E6%A0%B9%E5%8F%B73.%E4%B8%8A%E9%9D%A2%E7%9A%84%E4%B8%8D%E7%AE%97)
(X-Y/X+2Y)÷[(X²-Y²/X²+4XY+4Y²)-2]其中x=2+根号3,y=2-根号3.X-Y/X+2Y÷X²-Y²/X²+4XY+4Y²-2 其中x=2+根号3，y=2-根号3.上面的不算
(X-Y/X+2Y)÷[(X²-Y²/X²+4XY+4Y²)-2]其中x=2+根号3,y=2-根号3.
X-Y/X+2Y÷X²-Y²/X²+4XY+4Y²-2 其中x=2+根号3，y=2-根号3.上面的不算
(X-Y/X+2Y)÷[(X²-Y²/X²+4XY+4Y²)-2]其中x=2+根号3,y=2-根号3.X-Y/X+2Y÷X²-Y²/X²+4XY+4Y²-2 其中x=2+根号3，y=2-根号3.上面的不算
X-Y/X+2Y÷X²-Y²/X²+4XY+4Y²-2
=(X-Y/X+2Y)*(X+2y)^2/(x+y)(x-y)-2
=x+2y/x+y-2
=x+2y-2x-2y/x+y
=-x/x+y
=-(2+√3)/(2+√3+2-√3 )
=-(2+√3)/4
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