化简：(x2-4)(x+2x2-2x-x-1x2-4x+4)÷x-4x=______．

题型：填空题难度：一般来源：不详

化简：(x2-4)(

x+2

x2-2x

-

x-1

x2-4x+4

)÷

x-4

x

=______．

答案

(x2-4)(

x+2

x2-2x

-

x-1

x2-4x+4

)÷

x-4

x

=
（x+2）（x-2）[

x+2

x(x-2)

-

x-1

(x-2)2

]•

x

x-4

=（x+2）（x-2）•

x2-4-x2+x

x(x-2)2

•

x

x-4

=

x+2

x-2

．
故答案为

x+2

x-2

．