问题 填空题
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

综合
填空题