问题 填空题
(1)
x
x+1
=
xy
()

(2)
3xy
x2-2x
=
()
x-2
答案

(1)

x
x+1
=
xy
(x+1)•y
=
xy
xy+y

(2)

3xy
x(x-2)
=
x•3y
x(x-2)
=
3y
x-2

故答案为y(x+1);3y.

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