(x^2+y^2)/(x-y)-2xy/(x-y)
=(x^2+y^2-2xy)/(x-y)=(x-y)^2/(x-y)=x-y
x^2+y^2/x-y-2xy/x-y 怎么写
1个回答
相关问题
-
(x-y)[(x+y)^2-xy]+(x-y)[(x-y)^2+xy]
-
x2+2xy+y2x2y+xy2−x2−2xy+y2x2y−xy2．
-
请问：(x2-y2/xy)-(xy-y2/xy-x2) 怎么算?
-
(x-y)(x2+xy+y2)-xy(y-x)
-
填空（x-y）（x2+xy+y2）=______；（x-y）（x3+x2y+xy2+y3）=______
-
分式计算(x+y)( x^2/x^2-y^2）+（y^2/x-y)-（2x^2y-2xy^2/x^2-2xy+y^2)
-
Lim(x+y)/(x2-xy+y2) (x,y)→(∞,∞)这个怎么算
-
(x/x-y)-(y/x+y)+(2xy/x^2-y^2)
-
[2/xy/(1/x+1/y)2+(x2+y2)/(x2+2xy+y2)]*2x/(x-y)
-
代数式x-y/x/(x-2xy-y2/x)怎么算