早教吧作业答案频道 -->数学-->
请问：(x2-y2/xy)-(xy-y2/xy-x2)怎么算?x2-y2xy-y2-------------xyxy-x2
题目详情
请问：(x2-y2/xy)-(xy-y2/xy-x2) 怎么算?
x2-y2 xy-y2
----- - -------
xy xy-x2
x2-y2 xy-y2
----- - -------
xy xy-x2
▼优质解答
答案和解析
=(x²-y²)/xy-y(x-y)/[x(y-x)]
=(x²-y²)/xy+y(x-y)/[x(x-y)]
=(x²-y²)/xy+y/x
=(x²-y²)/xy+y²/xy
=(x²-y²+y²)/xy
=x²/xy
=x/y
=(x²-y²)/xy+y(x-y)/[x(x-y)]
=(x²-y²)/xy+y/x
=(x²-y²)/xy+y²/xy
=(x²-y²+y²)/xy
=x²/xy
=x/y
看了 请问：(x2-y2/xy)-...的网友还看了以下：
根与系数的关系x1方—x2方怎样化简告诉一下怎样化简他就这样问的还什么2008中考题(x1＋x2) 2020-04-25 …
请问：(x2-y2/xy)-(xy-y2/xy-x2)怎么算?x2-y2xy-y2-------- 2020-05-21 …
(X2-X1)+(X1-X2/X2X1)怎么分解成(X2-X1)[1-1/X1X2]是怎么分解来的 2020-06-27 …
(X2-X1)+(X1-X2/X2X1)怎么分解成(X2-X1)[1-1/X1X2](X2-X1) 2020-06-27 …
x1^3+x2^3怎么算x1的3次方+x2的3次方等于什么?他又是怎么推导的?还有x1^3-x2^ 2020-07-18 …
三阶矩阵[1,1,1；x1,x2,x3;x1^2,x2^2,x3^2]=(x2-x1)(x3-x1 2020-07-29 …
方程x²-5x+p=0的一个根比另一个根大3,则p=x1+x2=5想请问x1+x2=-5怎得出来的 2020-08-02 …
请问直线的斜率公式：k=(y2-y1)/(x2-x1),这里的y2和x2是怎么判断是哪个数的?比请问 2020-10-31 …
计算：x2-y2xy-xy-y2xy-x2的结果为（）A.xyB.x2+2y2xyC.x2D.x-2 2020-11-03 …
设M=x+y，N=x-y，则M+NM−N−M−NM+N等于（）A．1B．x2−y2xyC．x2−y2 2020-11-03 …