问题
解答题
(1)计算:|-1|-
(2)化简求值:
|
答案
(1)原式=1-2+1+1 4
=
;1 4
(2)原式=
•a-b a a (a-b)2
=
,1 a-b
当a=2011,b=2010时,原式=
=1.1 2011-2010
(1)计算:|-1|-
(2)化简求值:
|
(1)原式=1-2+1+1 4
=
;1 4
(2)原式=
•a-b a a (a-b)2
=
,1 a-b
当a=2011,b=2010时,原式=
=1.1 2011-2010