计算：x2-5x-2-xx-2-1+x2-x=______．

题型：解答题难度：一般来源：不详

计算：

x2-5

x-2

-

x

x-2

-

1+x

2-x

=______．

答案

原式=

x2-5

x-2

-

x

x-2

+

1+x

x-2

=

x2-5-x+1+x

x-2

=

(x+2)(x-2)

x-2

=x+2．
故答案为：x+2．