Question

化简x+y/x1/3+y1/3-x4/3-y4/3/x3/2-y3/2的结果是

Answer 1

可能有点问题,我改了一点

(x+y)/(x1/3+y1/3)-(x4/3-y4/3)/(x2/3-y2/3)

=(x1/3+y1/3)(x2/3-x1/3y1/3+y2/3)/(x1/3+y/13)-(x2/3+y2/3)(x2/3-y2/3)/(x2/3-y2/3)

=x2/3-x1/3y1/3+y/2/3-(x2/3+y2/3)

=-x1/3y1/3

(字母后面的数字是次数）