计算2-1-(2-3)0+13-1．

题型：解答题难度：一般来源：宁波

计算2-1-(

2

-

3

)0+

1

3 -1

．

答案

原式=

1

2

-1+

3 +1

( 3 +1)( 3 -1)

=-

1

2

+

3 +1

2

=

3

2

．